0:00:01 > 0:00:07Brown hyenas are lean, mean and very rarely seen, even in the wild.
0:00:07 > 0:00:11The only ones in Britain are here in the park
0:00:11 > 0:00:14and the keeper has to go in with them, despite the danger.
0:00:39 > 0:00:42Hello, and welcome to another episode of Roar. I'm Rani.
0:00:42 > 0:00:45And I'm Johny and this fellow here is Blue, the water buffalo.
0:00:45 > 0:00:48Water buffaloes get their name for spending most of the day
0:00:48 > 0:00:51submerged in muddy waters of Asia's tropical forests.
0:00:51 > 0:00:54Their widely hooved feet allow them to move about
0:00:54 > 0:00:58in wetlands and swamps without sinking too deeply into the mud.
0:00:58 > 0:01:00That's a good job, because they can get up to weights
0:01:00 > 0:01:05of up to 1200 kilograms - about the same weight as a small family car.
0:01:05 > 0:01:07Speaking of WEIGHT, I can't WAIT to get on
0:01:07 > 0:01:11- with the rest of the show. Let's not waste any more time.- Drive on.
0:01:12 > 0:01:15Coming up today, the biggest tigers in the world
0:01:15 > 0:01:18are hungry for red meat, so we lay a trail for them.
0:01:18 > 0:01:20Will they be able to hunt down the dinner?
0:01:23 > 0:01:28And our twin Roar Rangers struggle to shift a mountain of a rhino poo.
0:01:28 > 0:01:30She ain't going to be good at shovelling up the poo.
0:01:30 > 0:01:32Cos she ain't strong enough.
0:01:38 > 0:01:42But we're going to start with the enormous Siberian tigers.
0:01:42 > 0:01:46They're very dangerous, but also very playful.
0:01:51 > 0:01:55I've always wanted to do that, and I know what you're thinking!
0:01:55 > 0:01:58You can't do graffiti in a tiger enclosure!
0:01:58 > 0:02:01Well, I can, because this is non-toxic chalk spray.
0:02:01 > 0:02:04Mr Jim Vassey has asked me to bring it along. Do you like that, Jim?
0:02:04 > 0:02:07- Me and you together.- Yes, very nice.
0:02:07 > 0:02:08All right. Enough of me and you.
0:02:08 > 0:02:12- Why the chalk spray? - We're going to lay a scent trail.
0:02:12 > 0:02:15We'll do it in the cage, for the cubs to follow.
0:02:15 > 0:02:18- Right, OK.- This is a way of seeing how good their noses are.
0:02:20 > 0:02:23The three cubs, two boys called Altay, Altai
0:02:23 > 0:02:27and a little girl, Sayan, were born last year.
0:02:27 > 0:02:31They've been developing really well but Jim wants to check
0:02:31 > 0:02:34that they can follow a scent as they would do in the wild.
0:02:34 > 0:02:36I'll spray a trail of chalk
0:02:36 > 0:02:40and Jim will drag a bag of animal blood and guts along it.
0:02:40 > 0:02:43- This is what you will lay the trail with?- Yes.
0:02:43 > 0:02:45Lots of meat that's filled with blood.
0:02:45 > 0:02:48OK, I'll let you do that. Over there we have a camera.
0:02:48 > 0:02:52There's Jamie on a camera and he's going to catch all the action
0:02:52 > 0:02:55from up top, so we'll see the tigers following the line.
0:02:55 > 0:02:58- Hopefully.- Hopefully! Do you not have faith in the ability
0:02:58 > 0:03:00of the noses of your tigers?
0:03:00 > 0:03:02The thing is, they might cheat.
0:03:02 > 0:03:05- I don't believe it! Let's lay this scent trial.- OK, then.
0:03:05 > 0:03:09- If you follow the chalk on my line, all right?- OK. Hang on...
0:03:11 > 0:03:14Look at this. Because we have done this before.
0:03:14 > 0:03:16We've laid scent trails for tigers.
0:03:16 > 0:03:18And they seem to follow it.
0:03:18 > 0:03:22I suppose this is a good way to make sure it's nice and clear, isn't it?
0:03:22 > 0:03:23Yes. For the camera and for us.
0:03:23 > 0:03:27The other thing we have mentioned in the past is that a lot of times,
0:03:27 > 0:03:30you think that they're possibly following our scent.
0:03:30 > 0:03:32Would they follow the scent of the chalk?
0:03:32 > 0:03:36The chalk doesn't smell of anything. The meat's going to be stronger.
0:03:36 > 0:03:39OK. Now, who have we got in the enclosure?
0:03:39 > 0:03:42- There's obviously dad. Malchek. - Malchek.
0:03:42 > 0:03:44Then we've got Nika, who's mum.
0:03:44 > 0:03:47- Nika. - And then we've got the three kids.
0:03:47 > 0:03:49Now, we've not done this with them.
0:03:49 > 0:03:51- No.- Are they going to be able to follow this trail?
0:03:51 > 0:03:54It gives us a good indication of how good their noses are
0:03:54 > 0:03:57- while they're young. - How old are they now?
0:03:57 > 0:03:59They're almost a year old now.
0:03:59 > 0:04:02Now in here, you guys just give them their food.
0:04:02 > 0:04:05Do they still have characteristics of trying to do a kill?
0:04:05 > 0:04:09Yes, you actually see them play-biting the food.
0:04:09 > 0:04:12- Right.- As if they're killing.
0:04:12 > 0:04:15So they are getting the instinct to kill.
0:04:15 > 0:04:19Is that why we're doing this then today? It's a little bit like how
0:04:19 > 0:04:22- they behave out in the wild following a trail?- That's right.
0:04:22 > 0:04:26It's a form of enrichment. Rather than just chucking the meat in here
0:04:26 > 0:04:29every time we feed them, we're making them work for it.
0:04:29 > 0:04:32- Are we leaving the food here?- Yes. - OK, Jim. We'd better get on
0:04:32 > 0:04:35with scattering this meat. Join us later in the show
0:04:35 > 0:04:38when we let the tigers out and fight if they can follow their noses.
0:04:49 > 0:04:51Rah!
0:04:51 > 0:04:54Today's Roar Rangers are nine-year-old twins
0:04:54 > 0:04:56James and Emily from Essex.
0:04:56 > 0:05:01We're the Rangers! We're the Rangers! Woo hoo! Yes!
0:05:01 > 0:05:05They're obviously talented dancers, but will they be good Roar Rangers?
0:05:05 > 0:05:07They're certainly keen enough.
0:05:09 > 0:05:12I like the giraffes because I like the way they lick their lips.
0:05:12 > 0:05:16The job I'm most looking forward to is cleaning out the poo.
0:05:16 > 0:05:17PARP!
0:05:17 > 0:05:21That's what we like to hear! But is there a bit of sibling rivalry?
0:05:22 > 0:05:26She ain't going to be good at shovelling the poo.
0:05:26 > 0:05:27Cos she ain't strong enough.
0:05:31 > 0:05:36The big question is, what task will they be doing?
0:05:36 > 0:05:39"Today Emily and James, you are rhino keeping.
0:05:39 > 0:05:43"There is a bit of cleaning up to do."
0:05:43 > 0:05:46- Ooh!- Urgh!
0:05:46 > 0:05:48Woo-hoo! Woo-hoo! Woo-hoo!
0:05:48 > 0:05:52That does seem like a poo job. Show us your shovelling dance, James.
0:05:52 > 0:05:56# Show me, show me # Show me and show me... #
0:05:58 > 0:06:03Our Roar Rangers will be clearing up after the park's black rhinos.
0:06:03 > 0:06:06Coming from countries in central and southern Africa,
0:06:06 > 0:06:09hese massive mammals weigh as much as a small family car.
0:06:12 > 0:06:16With only about 3600 left in the wild, they're critically endangered.
0:06:16 > 0:06:20Looking after three of them is a real treat for our Roar Rangers.
0:06:21 > 0:06:23Rhino keeper Helen will be showing them the ropes.
0:06:23 > 0:06:28- Hiya!- Hello.- Hello.- What's your name? - My name's Emily.- I'm James.
0:06:28 > 0:06:30It's a good job you've got wellies on,
0:06:31 > 0:06:34- because the first job is picking up their poo.- Bleugh!
0:06:36 > 0:06:38Vongo, Salome and Rufiji
0:06:38 > 0:06:41are safely locked up in the top paddock.
0:06:41 > 0:06:45- Ready?- So Emily and James are safe to clear up the lower one.
0:06:45 > 0:06:48This is the poo. It's a bit smelly.
0:06:48 > 0:06:50It's a very big job indeed.
0:06:50 > 0:06:53Shovels at the ready? Go.
0:06:55 > 0:06:57I can't keep up. I can't do it!
0:06:59 > 0:07:02A rhino eats about three tons of food every year.
0:07:02 > 0:07:06And mixed with water, poos out even more.
0:07:06 > 0:07:08This is really tiring!
0:07:08 > 0:07:12Rhinos mark their territory by pooing in the same place every day.
0:07:12 > 0:07:15It's good news for our Roar Rangers.
0:07:19 > 0:07:21Hold on, there's poo stealing going on here.
0:07:21 > 0:07:24- Which one of you is the tiredest then?- Me!
0:07:24 > 0:07:28No wonder they're shattered. Our Roar Rangers are shovelling up
0:07:28 > 0:07:30almost twice their own body weight.
0:07:30 > 0:07:33It's killing my back!
0:07:33 > 0:07:38When I saw this I thought, I don't want to do it. But I have to.
0:07:40 > 0:07:44I think I want to have a rest.
0:07:44 > 0:07:46I'm aching. I'm sweating.
0:07:46 > 0:07:49I don't know how they do it.
0:07:49 > 0:07:51At least that's the shovelling done.
0:07:51 > 0:07:54Now they just have to move those wheelbarrows.
0:07:54 > 0:07:58- Do you reckon you'll be able to manage it?- Whoa!
0:07:58 > 0:08:00I can do it because I'm a boy.
0:08:00 > 0:08:03Are you sure of that, James?
0:08:03 > 0:08:05Ha, ha, ha!
0:08:06 > 0:08:09You might want some help there...
0:08:10 > 0:08:13- Ready?- Yes.
0:08:13 > 0:08:15Nearly tipped it.
0:08:15 > 0:08:17Think you can do any better, Emily?
0:08:20 > 0:08:23- Oh, it's gone. Oh!- Nearly!
0:08:23 > 0:08:25Don't worry. We'll get it back in.
0:08:25 > 0:08:28There we go. Oh, no!
0:08:28 > 0:08:30More to clear up.
0:08:30 > 0:08:34Uh-oh! It's time for keeper Helen to take over.
0:08:35 > 0:08:39Our exhausted Roar Rangers take a well-earned rest
0:08:39 > 0:08:40while Helen fetches some snacks.
0:08:40 > 0:08:43You wait there a minute. I'll go and get you some stuff.
0:08:43 > 0:08:46But the snacks are for the rhinos!
0:08:46 > 0:08:48We'll come back when the twins have recovered
0:08:48 > 0:08:51to see how they get on with feeding the giant beasts.
0:08:55 > 0:08:58- How do baboons get upstairs? - I don't know.
0:08:58 > 0:09:01- On an elevator.- Ha, ha, ha!
0:09:09 > 0:09:11What did the farmer say to the cow
0:09:11 > 0:09:13- that didn't produce any milk? - I don't know.
0:09:13 > 0:09:15- You're an UDDER failure.- Ha, ha, ha!
0:09:18 > 0:09:21HE SNORTS
0:09:21 > 0:09:24- Why did the elephant paint his toenails red?- I don't know.
0:09:24 > 0:09:27So he could hide in the cherry trees.
0:09:27 > 0:09:30Ha, ha, ha!
0:09:44 > 0:09:46Welcome back to the Siberian tiger enclosure.
0:09:46 > 0:09:47Earlier on in the show,
0:09:47 > 0:09:50Jim laid a scent trail within the enclosure of blood
0:09:50 > 0:09:54and I followed it with some yellow spray chalk, which was non-toxic.
0:09:54 > 0:09:57Now the idea for this is that we wanted to see
0:09:57 > 0:10:00if the tigers could follow their nose and get a big treat of meat.
0:10:00 > 0:10:02- That's right, Jim?- That's right.
0:10:02 > 0:10:04The tigers of course were locked away.
0:10:04 > 0:10:05It's now time to set them free.
0:10:12 > 0:10:15OK, here they come. Now, this one looks pretty big.
0:10:15 > 0:10:19- I'm guessing this is Malchek going through?- That's Dad.
0:10:19 > 0:10:21He's completely ignored our scent trail.
0:10:21 > 0:10:24We can tell because of the yellow chalk.
0:10:24 > 0:10:27He has wandered off over there. The reason for that?
0:10:27 > 0:10:30He's gone to the place where we'd normally put his food.
0:10:30 > 0:10:33He'd expect his lump of meat in a certain place.
0:10:33 > 0:10:34This way, they have to work for it.
0:10:34 > 0:10:37They've got to follow their noses to find it.
0:10:37 > 0:10:40And the little cubs have come out. I say little,
0:10:40 > 0:10:41they've got big, haven't they?
0:10:41 > 0:10:43They grow quick.
0:10:43 > 0:10:45Actually, one of them has gone up to our heart.
0:10:45 > 0:10:47- Yes. Oh, yeah.- So very clever,
0:10:47 > 0:10:50actually going to the beginning of the scent trail,
0:10:50 > 0:10:52- because that's near the door? - That's right.
0:10:52 > 0:10:56- Well, it's following it a little way, look.- Yes, it's having a go.
0:10:56 > 0:11:00So, as the cubs, how advanced is their sense of smell?
0:11:00 > 0:11:03It is quite advanced compared to ours, but because
0:11:03 > 0:11:06they stay with mum and dad, and in the wild they'd be with just mum
0:11:06 > 0:11:08and they wouldn't need to use
0:11:08 > 0:11:11their senses that much because they'll just sit there, wait for mum
0:11:11 > 0:11:15to make a kill and then call them, and they'll go and join her.
0:11:15 > 0:11:17So they're not really using them.
0:11:17 > 0:11:20So we're trying to get them to start using them at an earlier age.
0:11:20 > 0:11:22The other two haven't gone over yet.
0:11:22 > 0:11:25Is that because they haven't picked up the smell of meat?
0:11:25 > 0:11:27- Because it's meat, isn't it? - That's right.
0:11:27 > 0:11:30Is that what it is? They haven't picked it up,
0:11:30 > 0:11:32or, "Yeah, let him do the work."
0:11:32 > 0:11:35Yes, they're a bit like dad. They've decided that their meat
0:11:35 > 0:11:38is going to be somewhere else, and they've gone looking for it.
0:11:38 > 0:11:39But that one, though, you can see
0:11:39 > 0:11:42- she's following the trail.- We say she's following it,
0:11:42 > 0:11:44she's just walked off it now
0:11:44 > 0:11:45and gone straight for the food.
0:11:45 > 0:11:47Taken a short cut! So they're quite bright.
0:11:47 > 0:11:49That's right, yes. Yeah.
0:11:49 > 0:11:52We were talking about following scents to find meat,
0:11:52 > 0:11:57using their senses. Do they recognise family members?
0:11:57 > 0:12:00Yes. In a territory that mum will have with the cubs, she will go round
0:12:00 > 0:12:04and scent mark certain areas. Trees, bushes, stuff like that.
0:12:04 > 0:12:07And the clubs know her scent. And they'll add theirs.
0:12:07 > 0:12:11But sometimes you'll see a tiger go up to someone else's scent
0:12:11 > 0:12:15and rub themselves on it to remove it and to coat themselves with it.
0:12:15 > 0:12:19- Then they'll leave their scent there. - I can see dad there, he's growling
0:12:19 > 0:12:22at the little one that's got the meat. Is little one safe?
0:12:22 > 0:12:25- Little one's safe. In actual fact, little one's growling at dad.- Is it?
0:12:25 > 0:12:30- Big growl, actually.- Yes, saying, "Keep away."- Well, Jim, it was great
0:12:30 > 0:12:33to see them in action. But it looks like the tigers have walked off.
0:12:33 > 0:12:34They've had their fill of food,
0:12:34 > 0:12:37and they no longer want to follow our scent trail.
0:12:37 > 0:12:40Speaking of scent, Jim, I think you should go and get a shower!
0:12:40 > 0:12:42Same as the tigers.
0:12:59 > 0:13:04Having shovelled loads of rhino poo earlier on, our Roar Rangers' reward
0:13:04 > 0:13:07is to feed the mighty beasts.
0:13:07 > 0:13:10Rhinos eat 22 kilos of food every day.
0:13:10 > 0:13:14That's like you and me scoffing 150 apples.
0:13:14 > 0:13:18But today's treat is fruit salad, lots of it.
0:13:18 > 0:13:20Are you ready to put some fruit out?
0:13:20 > 0:13:23- Yes.- I'm tired.
0:13:25 > 0:13:27Rhinos have to forage all over the place in the wild,
0:13:27 > 0:13:32so our Roar Rangers fling the fruit in every direction.
0:13:32 > 0:13:35- It's time to release the beasts. - Come on, then!
0:13:35 > 0:13:40As rhinos can run at up to 30mph, experienced keeper Helen
0:13:40 > 0:13:44makes sure that our Roar Rangers are safely behind the fence.
0:13:44 > 0:13:46OK, make sure you stay back,
0:13:46 > 0:13:49because this is Rufiji coming over, and she's our oldest female.
0:13:49 > 0:13:51She's quite aggressive.
0:13:53 > 0:13:56Black rhinos are the most dangerous kind.
0:13:57 > 0:14:01They're aggressive at the drop of a hat, to frighten their rivals
0:14:01 > 0:14:04or if they feel threatened themselves.
0:14:06 > 0:14:08Horn clashing, snorting, shrieking
0:14:08 > 0:14:10and charging are very common,
0:14:10 > 0:14:13but they don't usually have a serious fight.
0:14:13 > 0:14:16All right, Fij, calm down. Good girl.
0:14:16 > 0:14:21But whilst Rufiji is a bit of a handful...Salome is a big softie.
0:14:21 > 0:14:23Put it in her mouth, put it in there.
0:14:28 > 0:14:31There you go, you've just fed your first rhino.
0:14:31 > 0:14:33Don't be scared, she's all right.
0:14:34 > 0:14:37- Eurgh!- Can I stroke her?
0:14:39 > 0:14:43Our Roar Rangers can stroke this rhino because she's a quiet one,
0:14:43 > 0:14:46and they're with a trained animal keeper.
0:14:46 > 0:14:49Does she feel how you expected her to feel?
0:14:49 > 0:14:52- No.- No. She feels quite hard.
0:14:52 > 0:14:54Rough. She feels rough
0:14:54 > 0:14:57- and all wrinkly.- That's all mud, where she's been in the wallow.
0:14:57 > 0:15:02Rhinos love to wallow. Not only does the mud cool them down,
0:15:02 > 0:15:06but it also acts as an insect repellent and a great sunblock.
0:15:06 > 0:15:10And, when it dries and falls off, it takes lots of dead skin with it.
0:15:12 > 0:15:14She's nice.
0:15:14 > 0:15:16Because we cleaned up all the poo,
0:15:16 > 0:15:20it's a good reward to stroke a rhino.
0:15:20 > 0:15:21Is she going to wee?
0:15:21 > 0:15:24- No, she's going to sit down.- Oh.
0:15:24 > 0:15:26She's like a dog, isn't she?
0:15:26 > 0:15:28Ooh, she's farting now.
0:15:28 > 0:15:30Eeurrgh!
0:15:30 > 0:15:33- Gross! - You've made her all relaxed, look.
0:15:33 > 0:15:36Euw, time to make a quick exit!
0:15:38 > 0:15:40So, have our Roar Rangers had a treat?
0:15:40 > 0:15:43They were really lucky to actually get to scratch Salome.
0:15:43 > 0:15:44She doesn't always come over,
0:15:44 > 0:15:47so they were lucky and I think they enjoyed it, so that's nice.
0:15:47 > 0:15:51I think you could be right there.
0:15:51 > 0:15:54It was really exciting. I just loved it.
0:15:54 > 0:15:56So what about James?
0:15:56 > 0:15:58It's been the best day of my life.
0:15:58 > 0:16:02And, from the look of it, I think the rhinos enjoyed it, too.
0:16:06 > 0:16:09The park's a home to many dangerous carnivores,
0:16:09 > 0:16:12and they have a very good record of breeding from them.
0:16:12 > 0:16:16But they're desperate to get some cubs from a new species
0:16:16 > 0:16:20who have recently arrived and we haven't seen yet.
0:16:20 > 0:16:22Somewhere in this enclosure
0:16:22 > 0:16:26two bone-crunching brown hyenas are hiding.
0:16:26 > 0:16:28And, despite their reputation,
0:16:28 > 0:16:31a keeper needs to go in and check on their health.
0:16:36 > 0:16:38These fearsome animals
0:16:38 > 0:16:42can smell their prey from as much as five kilometres away.
0:16:42 > 0:16:46As they prowl through the windswept dunes of Africa's Skeleton Coast.
0:16:51 > 0:16:55Their home in southern Africa is a fiercely hot, dry wilderness.
0:16:55 > 0:16:59But brown hyenas don't need to drink water at all.
0:16:59 > 0:17:02They can get all the fluid they need from their food.
0:17:02 > 0:17:06And head of carnivores Rich Barnes says they can eat everything.
0:17:06 > 0:17:09Horns, hooves, the lot!
0:17:09 > 0:17:13They can even bite through buffalo bones to get at the marrow inside.
0:17:13 > 0:17:16The jaws on all hyenas is particularly hard-core.
0:17:16 > 0:17:19You wouldn't want to put your hand in the mouth of a hyena.
0:17:19 > 0:17:22We put them bits of food down, and we've quite often heard her
0:17:22 > 0:17:25crunching on the bones. These are bones
0:17:25 > 0:17:29that we kind of put an axe through to chop up into pieces.
0:17:29 > 0:17:32That gives you some idea of how solid they are.
0:17:35 > 0:17:38Brown hyenas are mostly active at night, and very hard to see,
0:17:38 > 0:17:39even in the wild.
0:17:39 > 0:17:41The pair hiding in this enclosure
0:17:41 > 0:17:44are the only ones in the whole of the UK,
0:17:44 > 0:17:50and have never been filmed before. But Rich has been working on a plan.
0:17:50 > 0:17:52Since they arrived, what I've been doing
0:17:52 > 0:17:56is spending a lot of time down here, when they're more active,
0:17:56 > 0:17:58which is late in the day, early evening.
0:17:58 > 0:18:00Just as the sun's going down.
0:18:00 > 0:18:04Just sitting down here, not doing a whole lot, just watching them.
0:18:04 > 0:18:09So the idea today, is just going to be to go along, put the food in,
0:18:09 > 0:18:12sit back and hopefully they'll do something.
0:18:14 > 0:18:17Rich needs to see them regularly to check on their health.
0:18:17 > 0:18:20The best way to get close enough to is to take their food in there.
0:18:20 > 0:18:23But it could be dangerous.
0:18:23 > 0:18:26So he's taking a rake in with him.
0:18:26 > 0:18:30This is just a slab of meat which I can't even smell, and I'm holding it.
0:18:30 > 0:18:33But already the female, she's smelling it.
0:18:33 > 0:18:35She's got her nose in the air
0:18:35 > 0:18:38and she's got the scent of it, so she'll certainly get stuck in.
0:18:38 > 0:18:40And, if the male watches her do so then, hopefully,
0:18:40 > 0:18:42he'll come and do the same.
0:18:43 > 0:18:46This is incredible. It's the first time
0:18:46 > 0:18:49the brown hyenas here have ever been filmed.
0:18:49 > 0:18:52Hello.
0:18:52 > 0:18:56Only a very experienced keeper could do this.
0:18:56 > 0:18:58(Hey, hey, hey.)
0:18:58 > 0:19:01It's a good thing he took the rake to push her away.
0:19:01 > 0:19:03(Hey. Hey.)
0:19:03 > 0:19:05Rich's method of slowly getting
0:19:05 > 0:19:07the hyenas used to him is clearly working.
0:19:07 > 0:19:10(There you go, good girl. Good girl. Good girl.
0:19:10 > 0:19:13(There's a good girl.)
0:19:13 > 0:19:17(Normally she lets you get in there, put the food down.
0:19:17 > 0:19:20(But today she tried to take it off of me,
0:19:20 > 0:19:22'(and she wouldn't leave me alone.
0:19:22 > 0:19:25'(I had to kind of push her away a couple of times with the rake.
0:19:25 > 0:19:27'(I think she just wanted'
0:19:27 > 0:19:30(to get to the beef. It obviously looked quite tasty.
0:19:30 > 0:19:32(I'm just hoping, if we stay nice and quiet,
0:19:32 > 0:19:35(the male will be watching from a distance,
0:19:35 > 0:19:38(and he'll just come over and hopefully get involved as well.)
0:19:39 > 0:19:43Rich has to see the male to check that he's all right.
0:19:43 > 0:19:46But he really doesn't want to go back in there,
0:19:46 > 0:19:49so we'll come back later to see if the male does come out.
0:20:04 > 0:20:08Lemons and limes are too sour for the human palate to enjoy,
0:20:08 > 0:20:10but what will lion-tailed macaques make of them?
0:20:10 > 0:20:14I'm here with primate keeper Ruth to find out. What's the big idea, Ruth?
0:20:14 > 0:20:17Today we're going to put their palate to the ultimate test,
0:20:17 > 0:20:21giving them very citrussy lemons and limes and see what they make of them.
0:20:21 > 0:20:24I've got to say, if I were to have one of these, I'd be like...
0:20:24 > 0:20:27Do you think they'll have the same reaction?
0:20:27 > 0:20:29We hope so. They don't often get these,
0:20:29 > 0:20:32so we're just go to give it to them and see what happens.
0:20:32 > 0:20:34In general, why would you do something like this?
0:20:34 > 0:20:38It's a bit of sensory enrichment for them. It keeps them on their toes.
0:20:38 > 0:20:41They wouldn't necessarily get these in the wild,
0:20:41 > 0:20:44but they would eat a huge variety of fruits and vegetables,
0:20:44 > 0:20:46so it's really good stimulation for them.
0:20:46 > 0:20:49OK, wicked. What do you reckon will happen, then?
0:20:49 > 0:20:52I reckon they'll all probably start fighting over them.
0:20:52 > 0:20:55It's quite a big group, so if you don't eat quick,
0:20:55 > 0:20:56you don't eat at all.
0:20:56 > 0:20:59They'll be in hot competition for them.
0:20:59 > 0:21:01I don't want to be fighting with them,
0:21:01 > 0:21:04so I reckon we should get out of here and let them out.
0:21:04 > 0:21:05- Sounds like a plan.- Bring it on.
0:21:07 > 0:21:09Let's do it.
0:21:15 > 0:21:17This is an interesting experiment.
0:21:17 > 0:21:20They've noticed the lemons and limes already.
0:21:20 > 0:21:22Macaques like to take their food away.
0:21:22 > 0:21:25They've got big cheek pouches, which they stuff with
0:21:25 > 0:21:28as much food as they can get in as quick a time as possible.
0:21:28 > 0:21:30Then they'll go off somewhere,
0:21:30 > 0:21:32which is what you can see them doing now.
0:21:32 > 0:21:34Are they quite intelligent, macaques?
0:21:34 > 0:21:38Will they know what to do? Will they realise there's juicy fruit inside?
0:21:38 > 0:21:39Well, sour fruit inside!
0:21:39 > 0:21:41Yes, they are really intelligent.
0:21:41 > 0:21:44In the wild, their food isn't obviously readily available
0:21:44 > 0:21:46so they developed big brains to cope with that.
0:21:46 > 0:21:49They've got to search for food, work out how to get it,
0:21:49 > 0:21:52so they're really intelligent and inquisitive.
0:21:52 > 0:21:55They'll definitely know and they've got a good sense of smell.
0:21:55 > 0:21:59Look at this fellow here, walking on two legs. Do they do that often?
0:21:59 > 0:22:01I have seen them do that, trying to make a quick exit.
0:22:01 > 0:22:05Are they skilled on two legs, like humans, or is it mainly on four?
0:22:05 > 0:22:09- Because I haven't seen them doing it often.- They are quadrupedal.
0:22:09 > 0:22:11Interesting word, what does that mean?
0:22:11 > 0:22:14- It means the use four legs, rather than two.- OK.
0:22:14 > 0:22:16But they can run on two when they want to.
0:22:16 > 0:22:19Are their palates similar to a human's?
0:22:19 > 0:22:22I think so. They've obviously got the ability
0:22:22 > 0:22:24to taste sweet and sour, just like we have.
0:22:24 > 0:22:28That's why I thought maybe they wouldn't go for it so much.
0:22:28 > 0:22:31They tend to like very sweet things - banana, apple, that kind of thing.
0:22:31 > 0:22:33That would be the first thing to go.
0:22:33 > 0:22:36They're not even flinching. They love it!
0:22:36 > 0:22:39Look at this little one here. Is that with his mum?
0:22:39 > 0:22:42Yes, that's actually the youngest in the group. She's only five months.
0:22:42 > 0:22:45I don't know about you, but I thought this lot would be
0:22:45 > 0:22:47a bunch of sour pusses. See what I did there?
0:22:47 > 0:22:49I think we'll leave them.
0:22:49 > 0:22:51The lion-tailed macaques are citrus specialists.
0:22:51 > 0:22:53- They're loving it.- They are.
0:22:58 > 0:23:02Now for the moment all you online Roar gamers have been waiting for -
0:23:02 > 0:23:05today's cheat code.
0:23:08 > 0:23:11Type that in and who knows what treats and surprises
0:23:11 > 0:23:13are in store for your animals today?
0:23:13 > 0:23:17And don't forget to check out our brand-new enclosure. Have fun!
0:23:22 > 0:23:26Back at the hyena enclosure, Rich is anxious.
0:23:26 > 0:23:29He's seen the female brown hyena, but he needs to see her mate too
0:23:29 > 0:23:31to check that he's all right
0:23:31 > 0:23:34because they're really hoping that this pair will have some cubs.
0:23:36 > 0:23:40They're very jumpy creatures, so our camera crew are staying well back.
0:23:40 > 0:23:45The female was tempted out into the open by some meat that Rich took in,
0:23:45 > 0:23:46but where's the male?
0:23:50 > 0:23:55She's looked round a couple of times, so I think he's around.
0:23:55 > 0:23:57If he does come in, he'll come in from
0:23:57 > 0:23:59the thicker bushy area at the corner there.
0:24:02 > 0:24:05She's now trying to drag the meat off.
0:24:05 > 0:24:08If she takes it into the bushes, the male won't come out
0:24:08 > 0:24:10and we won't see him.
0:24:10 > 0:24:14His kind of little den is just inside those bushes.
0:24:14 > 0:24:18I think he's up and about, he's just kind of aware that we're here.
0:24:18 > 0:24:22You win some, you lose some. You have to just put the time in, I guess.
0:24:24 > 0:24:26This is not going well.
0:24:26 > 0:24:29Rich can only make sure that the male isn't injured or ill
0:24:29 > 0:24:31by seeing him.
0:24:32 > 0:24:34But at long last, he makes a move.
0:24:35 > 0:24:37There he is. You see him?
0:24:39 > 0:24:43He's having a scratch. The male's just come out.
0:24:43 > 0:24:47He's just walked across the back of the enclosure at the top.
0:24:47 > 0:24:49He's just watching us.
0:24:51 > 0:24:54Rich can see he's OK, which is the main thing,
0:24:54 > 0:24:57and we now have shots of both of the brown hyenas,
0:24:57 > 0:24:59the only ones in Britain today.
0:25:01 > 0:25:03They'll always be wild and hard to spot,
0:25:03 > 0:25:07but little by little, the hyenas are becoming more confident.
0:25:09 > 0:25:13I'm glad that he didn't just come out, see us and run off again.
0:25:13 > 0:25:16He's obviously happy enough to sit up there in the bushes
0:25:16 > 0:25:17and just watch us.
0:25:17 > 0:25:21He's kind of keeping his distance. So I think that's quite nice.
0:25:21 > 0:25:24It shows you can't always get animals to do what you want them to do.
0:25:24 > 0:25:27Sometimes you just have to sit and wait.
0:25:28 > 0:25:30It's worth it. Not many people
0:25:30 > 0:25:33have had the chance to see these extremely rare animals,
0:25:33 > 0:25:37and we'll certainly bring you news if they do go on to produce cubs.
0:25:44 > 0:25:47Last year, three very rare belted ruffed lemurs
0:25:47 > 0:25:48arrived in the park from France.
0:25:48 > 0:25:52The island of Madagascar off Africa's east coast
0:25:52 > 0:25:54is the only place in the world
0:25:54 > 0:25:56where lemurs live in the wild
0:25:56 > 0:25:58And they're critically endangered
0:26:00 > 0:26:02Since their arrival six months ago,
0:26:02 > 0:26:05the new lemurs have been kept apart from the other primates and monkeys
0:26:05 > 0:26:10to make sure they didn't bring any illnesses with them.
0:26:10 > 0:26:14But now Mel Frampton has a surprise in store for us. What is the news?
0:26:14 > 0:26:16Big news! These guys are out of quarantine
0:26:16 > 0:26:18and they're about to move house.
0:26:18 > 0:26:21They're going down into the De Brazza enclosure,
0:26:21 > 0:26:23where those guys are on Monkey Walk.
0:26:23 > 0:26:25They'll have a nice big bedroom, a big outside,
0:26:25 > 0:26:27because their quarantine is finished.
0:26:27 > 0:26:29- They're free!- Fantastic news.
0:26:29 > 0:26:32How long will it take them to get used to their new enclosure?
0:26:32 > 0:26:35There will be more space. How many are here?
0:26:35 > 0:26:38- We've got three here.- Look at me counting them, they keep moving.
0:26:38 > 0:26:40- I thought there was 50! - We've got three in here.
0:26:40 > 0:26:43It'll take them a couple of weeks to settle,
0:26:43 > 0:26:44they'll have lots of new smells.
0:26:44 > 0:26:47It'll keep them busy for a while, actually.
0:26:47 > 0:26:50One other question, when you move these guys to their new enclosure,
0:26:50 > 0:26:52will you give it a good scrub
0:26:52 > 0:26:54because De Brazzas have a different smell?
0:26:54 > 0:26:57Definitely. It will have to be fully disinfected.
0:26:57 > 0:27:00I can get you two to come and give me a hand, if you like?
0:27:00 > 0:27:01I can get you two, you two.
0:27:01 > 0:27:05I don't mind that, Rani, because I love these guys. They're amazing.
0:27:05 > 0:27:06Yeah, and you love cleaning!
0:27:06 > 0:27:10While Johny gets his brush and mop ready to clean the enclosure,
0:27:10 > 0:27:13why don't you check out what's on the next episode of Roar?
0:27:14 > 0:27:18There's high drama when some of the most savage carnivores in the world
0:27:18 > 0:27:23have to be moved to another park, but what happens when
0:27:23 > 0:27:27one of them wakes up before they can get him into the travel crate?
0:27:27 > 0:27:30We need to get this in now, Jim. This dog is literally about to go.
0:27:30 > 0:27:35And the most endangered gibbons in the world have a new baby.
0:27:35 > 0:27:39- But, it has to cling on for dear life.- Don't miss it!
0:27:51 > 0:27:54Subtitles by Red Bee Media Ltd
0:27:54 > 0:27:57E-mail subtitling@bbc.co.uk