0:00:09 > 0:00:12High in the tree tops of Central America....
0:00:16 > 0:00:19..a margay rules the forest.
0:00:43 > 0:00:45Just one of a remarkable family...
0:00:50 > 0:00:51..that has conquered the world.
0:01:08 > 0:01:09One family...
0:01:12 > 0:01:14..40 different faces.
0:01:30 > 0:01:32They thrive in every landscape...
0:01:34 > 0:01:36..from the frozen north...
0:01:39 > 0:01:40..to the driest deserts.
0:01:45 > 0:01:49From the most remote, barely explored places...
0:01:57 > 0:02:00..to the heart of our modern world.
0:02:02 > 0:02:05These are the cats.
0:02:30 > 0:02:33The monsoon wetlands of South Asia...
0:02:38 > 0:02:41..home to an extraordinary cat...
0:02:44 > 0:02:50..one whose entire life revolves around water.
0:03:31 > 0:03:33This is a fishing cat.
0:03:47 > 0:03:50Their unique ability to catch slippery fish
0:03:50 > 0:03:52in these weed-filled ponds
0:03:52 > 0:03:55has allowed them to colonise these vast wetlands.
0:04:00 > 0:04:04Beneath their long outer coat, they have a shorter layer
0:04:04 > 0:04:07of insulating fur that acts like a wet suit
0:04:07 > 0:04:10and they have partially webbed feet.
0:04:12 > 0:04:15They're well adapted to a life aquatic...
0:04:18 > 0:04:23..but, even so, every fishing cat still has to learn how to fish.
0:04:30 > 0:04:33This female has two kittens just a couple of months old.
0:04:33 > 0:04:37KITTEN MEOWS
0:04:45 > 0:04:50Up to now, they've been kept safely away from the water's edge,
0:04:50 > 0:04:52but that's all about to change.
0:05:09 > 0:05:12This is the first time they've seen water.
0:05:12 > 0:05:15KITTEN PURRS
0:05:32 > 0:05:35It's natural to be nervous...
0:05:49 > 0:05:54..but these water babies take to it like a cat to water.
0:06:04 > 0:06:08It's time to show them the real reason they've been brought here.
0:06:36 > 0:06:41Long whiskers detect vibrations from fish moving in the shallows...
0:06:44 > 0:06:47..helping to gauge the exact striking distance.
0:06:57 > 0:06:59Now it's the kittens' turn.
0:07:32 > 0:07:35For now, it's only water plants that need to be afraid.
0:07:43 > 0:07:46This could take some time.
0:07:55 > 0:07:58They'll be back tomorrow for another lesson.
0:08:13 > 0:08:17All over the globe, cats of all shapes and sizes
0:08:17 > 0:08:19have adapted to the challenges
0:08:19 > 0:08:22of the planet's most extreme environments.
0:08:40 > 0:08:43This is the Namib, Southern Africa,
0:08:43 > 0:08:46the oldest desert on Earth.
0:08:54 > 0:08:57Here, there's no surface water for hundreds of miles.
0:09:09 > 0:09:13Despite this, these desert lions thrive amongst the dunes.
0:09:32 > 0:09:35They live in small, isolated prides,
0:09:35 > 0:09:39relying on shared knowledge and experience
0:09:39 > 0:09:42to find food in this hostile landscape.
0:09:56 > 0:10:00Amongst the dunes, three sisters, barely a year old.
0:10:11 > 0:10:13They are alone,
0:10:13 > 0:10:15recently orphaned.
0:10:17 > 0:10:20The youngest, most inexperienced pride in Africa.
0:10:50 > 0:10:53This is the hardest time of the year for the animals of the Namib.
0:10:58 > 0:11:00The desert is at its hottest...
0:11:01 > 0:11:03..and driest.
0:11:08 > 0:11:12Yet it's this hostility that offers the cubs a chance to survive.
0:11:18 > 0:11:23It will mean searching day in, day out.
0:11:34 > 0:11:37They walk twice as far as lions living on
0:11:37 > 0:11:39the savannas of East Africa.
0:11:57 > 0:12:00This is the lifeline they were looking for,
0:12:00 > 0:12:03a victim of the extreme heat,
0:12:03 > 0:12:04a dead oryx.
0:12:13 > 0:12:17These cubs don't have the skills or strength to hunt yet.
0:12:23 > 0:12:27But like all desert lions, when times demand it,
0:12:27 > 0:12:28they will scavenge...
0:12:30 > 0:12:32..even on rotting meat.
0:12:48 > 0:12:50With luck, this strategy
0:12:50 > 0:12:53of scavenging victims of the harsh desert
0:12:53 > 0:12:55will keep the cubs from starvation.
0:13:16 > 0:13:18A kudu,
0:13:18 > 0:13:19a huge antelope,
0:13:19 > 0:13:22and one rarely seen in the desert.
0:13:34 > 0:13:36But this is no victim of the heat.
0:13:38 > 0:13:41This is a lion kill.
0:14:02 > 0:14:05A lioness that's not going to share.
0:14:11 > 0:14:13A close call
0:14:13 > 0:14:15and a vital lesson for the sisters.
0:14:19 > 0:14:21In the desert,
0:14:21 > 0:14:23the biggest danger facing young lions
0:14:23 > 0:14:25comes from adult lions.
0:14:42 > 0:14:46The desert has provided just enough for them to survive.
0:14:48 > 0:14:50Very soon they will be old enough
0:14:50 > 0:14:52and strong enough
0:14:52 > 0:14:54to hunt for themselves.
0:15:03 > 0:15:07Cats have evolved to survive in almost every environment on Earth.
0:15:13 > 0:15:16The thick fur and large padded feet of Canada lynx
0:15:16 > 0:15:21enable them to thrive in the deep snow of the frozen north.
0:15:29 > 0:15:31In the forests of India,
0:15:31 > 0:15:34wonderfully agile clouded leopards
0:15:34 > 0:15:36are at home amongst tangled branches.
0:15:38 > 0:15:40Large claws provide grip
0:15:40 > 0:15:42and a long tail gives them balance.
0:15:47 > 0:15:48On the African plains,
0:15:48 > 0:15:53caracal spring almost effortlessly over the tall savanna grass...
0:15:56 > 0:15:58..using their long, powerful legs.
0:16:07 > 0:16:11Whilst some cats are finely tuned to live in just one environment,
0:16:11 > 0:16:14some have a different strategy.
0:16:18 > 0:16:21They will go wherever new opportunities appear.
0:16:33 > 0:16:36The Pacific Coast of Costa Rica.
0:16:39 > 0:16:42Here, there's a cat that can swap life in the jungle
0:16:42 > 0:16:45to go hunting on a tropical beach.
0:16:57 > 0:16:59Thermal-imaging cameras
0:16:59 > 0:17:02reveal the nightlife on this Pacific shore,
0:17:02 > 0:17:04and it's busy.
0:17:23 > 0:17:28A jaguar, the biggest and most powerful cat in the Americas.
0:17:48 > 0:17:49They're built to take on
0:17:49 > 0:17:53the biggest, most dangerous prey in the jungle...
0:17:58 > 0:18:01..but this female is pregnant.
0:18:03 > 0:18:06Right now, she needs to eat as much as possible
0:18:06 > 0:18:09to provide nourishment for her developing cub.
0:18:11 > 0:18:16Tonight, this beach may provide a very welcome addition to her diet.
0:18:20 > 0:18:25A jaguar's eyes are six times more sensitive to light than our own,
0:18:25 > 0:18:31so, even in the dark, anything that moves catches her attention.
0:18:38 > 0:18:40Around the time of the full moon,
0:18:40 > 0:18:43turtles come ashore to lay their eggs.
0:19:33 > 0:19:37An olive ridley turtle has one-inch thick armour for protection...
0:19:48 > 0:19:53..but, for its size, a jaguar has the strongest jaws of any cat...
0:20:04 > 0:20:08..a bite powerful enough to crack open this rich source of food.
0:20:21 > 0:20:24She is not the only one that benefits -
0:20:24 > 0:20:28other animals clean up the scraps.
0:20:35 > 0:20:40Her visit to the beach couldn't have been timed any better.
0:20:52 > 0:20:56It's the beginning of a seasonal gathering of turtles,
0:20:56 > 0:20:59known locally as the arribada, the arrival.
0:21:11 > 0:21:12Over the next few nights,
0:21:12 > 0:21:1630,000 turtles will come to this beach to nest.
0:21:34 > 0:21:36In fact, she won't eat many.
0:21:36 > 0:21:38But for this expectant mother,
0:21:38 > 0:21:42the meat from a few turtles will make all the difference.
0:21:45 > 0:21:48Soon this opportunity will be over
0:21:48 > 0:21:50and she will return to hunting in the forest...
0:21:53 > 0:21:56..leaving the beach to the thousands of hatchlings
0:21:56 > 0:21:59that emerge and return safely to sea.
0:22:18 > 0:22:212,500 miles north...
0:22:26 > 0:22:29..the cool and stormy shores of California.
0:22:35 > 0:22:39A very different coastline, where a very different cat
0:22:39 > 0:22:41has found her own way to make her living.
0:22:54 > 0:22:56At home in her den close to the beach...
0:22:59 > 0:23:00..a bobcat.
0:23:06 > 0:23:10Bobcats usually hunt rabbits and small mammals,
0:23:10 > 0:23:14but this female has set her sights rather higher.
0:23:35 > 0:23:38Here, where a freshwater stream meets the sea...
0:23:42 > 0:23:46..gulls flock to drink and wash salt from their feathers.
0:23:50 > 0:23:53It's what she's counting on.
0:24:13 > 0:24:15But it's not going to be easy.
0:24:31 > 0:24:34She'll just have to wait for the gulls to come back.
0:24:44 > 0:24:47To hunt like this takes determination.
0:25:11 > 0:25:13Most end in failure...
0:25:19 > 0:25:21..but she returns, day after day.
0:25:24 > 0:25:27With every attempt, she refines her technique.
0:25:54 > 0:25:55At last...
0:25:57 > 0:26:00..but one gull won't keep her fed for long.
0:26:10 > 0:26:14Fortunately, this beach is never short of chances to hunt.
0:27:18 > 0:27:22There's no doubting her persistence and skill...
0:27:25 > 0:27:28..even if the occasional gull does slip her grip.
0:27:37 > 0:27:42And, remarkably, she's doing all this whilst she's blind in one eye.
0:27:57 > 0:28:00The Sundarbans of India and Bangladesh
0:28:00 > 0:28:02is the world's largest mangrove swamp.
0:28:12 > 0:28:16Unexplored, muddy islands surrounded by the sea...
0:28:20 > 0:28:22..where a legendary big cat rules.
0:28:27 > 0:28:34BIG CAT MAKES BELLOWING GROWLS
0:28:39 > 0:28:42Perhaps the most elusive and least understood.
0:28:59 > 0:29:00The swamp tiger.
0:29:36 > 0:29:39Only at low tide is it possible catch a glimpse
0:29:39 > 0:29:42of what lies within these mysterious mangroves.
0:30:00 > 0:30:04This is when the animals come down to the shore to feed...
0:30:08 > 0:30:12..both hunted...and hunter.
0:30:20 > 0:30:23Low tide also offers a brief chance
0:30:23 > 0:30:26for this male to patrol the shoreline of his island.
0:30:41 > 0:30:46Scent marking is a warning to other tigers to keep off.
0:30:55 > 0:30:58This is a place where a cat must live his entire life
0:30:58 > 0:31:00in tune with the tide.
0:31:11 > 0:31:13With the rising water,
0:31:13 > 0:31:16life retreats back to the depths of the mangroves...
0:31:21 > 0:31:22..and he must follow...
0:31:25 > 0:31:29..disappearing again into these strange swamplands.
0:31:36 > 0:31:39We know almost nothing about these tigers,
0:31:39 > 0:31:43but researchers now believe that as many as 100 of them
0:31:43 > 0:31:46make these remote islands their home.
0:31:53 > 0:31:58The world's most celebrated big cats continue to surprise us,
0:31:58 > 0:32:01but the most surprising cats of all...
0:32:03 > 0:32:05..are the little cats.
0:32:05 > 0:32:07FUNKY MUSIC PLAYS
0:32:19 > 0:32:22Out of the 40 known cat species,
0:32:22 > 0:32:2633 are what scientists call the small cats.
0:32:33 > 0:32:37They are the most secretive and least studied of all the cats.
0:32:43 > 0:32:45In the mountains of Chile,
0:32:45 > 0:32:48a guigna, the smallest cat in all the Americas,
0:32:48 > 0:32:51hunts moths amongst the undergrowth.
0:32:59 > 0:33:02Ocelots are the most common cat in the Costa Rican jungle,
0:33:02 > 0:33:04yet they are rarely seen.
0:33:04 > 0:33:07Their perfectly camouflaged coats
0:33:07 > 0:33:10help them to disappear in an instant.
0:33:15 > 0:33:19African wild cats live scattered all across Africa,
0:33:19 > 0:33:21from Morocco to South Africa,
0:33:21 > 0:33:23one of the most widespread of all cats,
0:33:23 > 0:33:27yet they too are hardly ever seen.
0:33:33 > 0:33:37But now specialist camera technology is giving us
0:33:37 > 0:33:42a new insight into the mysterious lives of these small cats
0:33:42 > 0:33:46in some of the most remote places on Earth.
0:33:50 > 0:33:53The Karoo desert, South Africa.
0:33:54 > 0:33:58A vast landscape dominated by low desert scrub.
0:34:03 > 0:34:07It provides the perfect cover for Africa's smallest cat.
0:34:11 > 0:34:13CAT WAILS
0:34:27 > 0:34:32She waits for the cool of night before heading out to hunt.
0:34:52 > 0:34:55A black-footed cat.
0:35:03 > 0:35:07This little female is known to researchers as Gyra.
0:35:07 > 0:35:10She's tiny, weighing not much more than a kilo,
0:35:10 > 0:35:13200 times lighter than a lion.
0:35:26 > 0:35:28She'd be almost impossible to find,
0:35:28 > 0:35:31but she's being tracked with a radio collar.
0:35:34 > 0:35:38And using surveillance cameras that rival a cat's night vision,
0:35:38 > 0:35:41we can at last reveal her nocturnal pursuits.
0:35:50 > 0:35:54She can walk 20 miles a night in search of food,
0:35:54 > 0:35:56the furthest recorded for any small cat.
0:36:03 > 0:36:07Guided by superb night vision, and responding to the tiniest sounds...
0:36:10 > 0:36:12..anything that moves is a potential meal.
0:36:16 > 0:36:18She'll even eat locusts...
0:36:20 > 0:36:23..but she prefers gerbils.
0:36:40 > 0:36:44Or, if that doesn't work, birds.
0:37:15 > 0:37:18With a wiggle to tuck her legs in,
0:37:18 > 0:37:20she gets as low to the ground as possible.
0:37:23 > 0:37:28Primed like a spring, she can deliver maximum power...
0:37:28 > 0:37:30..to jump.
0:37:36 > 0:37:38She hits her target 60% of the time.
0:37:40 > 0:37:44It's what makes black-footed cats the most lethal hunters
0:37:44 > 0:37:46in the entire cat family.
0:37:55 > 0:37:59And the reason for Gyra's huge appetite
0:37:59 > 0:38:02is that she's raising her own little hunter.
0:38:21 > 0:38:25Even the deadliest cat in Africa can have a softer side.
0:38:37 > 0:38:41Perhaps the most bizarre small cat of all
0:38:41 > 0:38:42lives here...
0:38:46 > 0:38:47..in the heart of Mongolia...
0:38:51 > 0:38:56..one of the most remote and least populated places on Earth.
0:39:06 > 0:39:08After decades of research,
0:39:08 > 0:39:12we are now able to reveal an insight into their hidden lives.
0:39:46 > 0:39:49This is Pallas's cat.
0:40:06 > 0:40:09She's cautious and she has good reason.
0:40:14 > 0:40:16Kittens.
0:40:18 > 0:40:19Four of them.
0:40:21 > 0:40:23Two months old
0:40:23 > 0:40:26and just out of the den.
0:40:34 > 0:40:36They're already becoming a bit of a handful.
0:41:09 > 0:41:13They live in a world of windswept grassland,
0:41:13 > 0:41:17an area three times bigger than the UK,
0:41:17 > 0:41:22but this outcrop of rocks is a safe place to hide the family.
0:41:27 > 0:41:31It's morning and the kittens are hungry,
0:41:31 > 0:41:35but a mother can't hunt with four excitable youngsters tagging along.
0:41:44 > 0:41:48Today, she will have to leave her kittens home alone.
0:41:56 > 0:42:00Out here, in the open, there's nowhere to hide.
0:42:06 > 0:42:09The only thing she can do is to try and blend in.
0:42:15 > 0:42:17A Pallas's cat's ears
0:42:17 > 0:42:20are positioned unusually low on the side of their head
0:42:20 > 0:42:23and that helps them to keep a low profile.
0:42:38 > 0:42:42What's more, these cats can flatten their body to look...
0:42:42 > 0:42:43..like a rock.
0:43:02 > 0:43:03She'll need to hunt all day
0:43:03 > 0:43:06to provide enough for her growing kittens,
0:43:06 > 0:43:11who, meanwhile, are getting up to all sorts of mischief.
0:43:22 > 0:43:26Play will help them to hone their own hunting skills.
0:43:35 > 0:43:39A silver vole finds itself the centre of the kittens' attention.
0:44:20 > 0:44:21The key
0:44:21 > 0:44:24is a silent,
0:44:24 > 0:44:25patient
0:44:25 > 0:44:27approach.
0:44:32 > 0:44:36Alas, on these rocks, a vole has the upper hand.
0:44:46 > 0:44:50Fortunately, the kittens can rely on their mother to provide.
0:45:07 > 0:45:10Pallas's cats actually do very well here
0:45:10 > 0:45:13and there could be as many as 10,000 living in these grasslands...
0:45:19 > 0:45:22..not that it makes them any easier to see.
0:45:34 > 0:45:37In some places, small cats are living secret lives
0:45:37 > 0:45:39right under our noses.
0:45:46 > 0:45:50East of Johannesburg, Africa's biggest industrial complex.
0:45:58 > 0:46:00The size of a town.
0:46:07 > 0:46:09Behind the barbed wire,
0:46:09 > 0:46:14surveillance cameras detect intruders every night.
0:46:18 > 0:46:20A cat has taken over.
0:46:28 > 0:46:30The tierboskat,
0:46:30 > 0:46:33also known as a serval.
0:46:49 > 0:46:53This restricted area is now the home of around 100 of these
0:46:53 > 0:46:55small spotted cats...
0:46:59 > 0:47:02..the densest population anywhere in Africa.
0:47:31 > 0:47:34This secure wasteland is teeming with life.
0:47:42 > 0:47:45It's a place where people rarely venture...
0:47:48 > 0:47:51..and the fences keep out larger predators
0:47:51 > 0:47:53that might be a threat to the servals.
0:48:11 > 0:48:15What's more, the water used to cool the heavy industry
0:48:15 > 0:48:19has helped create lush meadows around these pools
0:48:19 > 0:48:25and that, in turn, has led to an explosion of rats and mice.
0:48:29 > 0:48:31All a serval can eat.
0:48:36 > 0:48:39They're not only attracted by the food,
0:48:39 > 0:48:43but by the one thing that all cats need,
0:48:43 > 0:48:45their own space...
0:48:48 > 0:48:51..where they can be left undisturbed.
0:48:53 > 0:48:55This is a small cat paradise.
0:49:06 > 0:49:09Cats have conquered almost every corner of the planet.
0:49:27 > 0:49:31But now, even in the most remote places,
0:49:31 > 0:49:35they are feeling the impact from our way of life...
0:49:39 > 0:49:42..as we encroach more and more into their world.
0:49:47 > 0:49:50Around the planet, their numbers are decreasing.
0:49:54 > 0:49:59If cats are to survive in our changing world,
0:49:59 > 0:50:02we just need to leave them some space.
0:50:17 > 0:50:19For the Big Cats team,
0:50:19 > 0:50:23it was filming small cats that posed the greatest challenge...
0:50:27 > 0:50:31..none more so than Pallas's cat in the remote grasslands of Mongolia.
0:50:38 > 0:50:42Producer Paul Williams and camerawoman Sue Gibson
0:50:42 > 0:50:46are hoping to be the first team to film this elusive cat
0:50:46 > 0:50:50and they're hoping to find a family with kittens.
0:50:53 > 0:50:56They're joining Gaana and his research team,
0:50:56 > 0:51:00who have been studying the cats here for over a decade.
0:51:01 > 0:51:02As luck would have it,
0:51:02 > 0:51:05the researchers have already seen kittens on their camera traps.
0:51:05 > 0:51:08We've got kittens and a mother,
0:51:08 > 0:51:12which is really exciting cos that was only a few days ago
0:51:12 > 0:51:14that they were caught on the camera trap.
0:51:18 > 0:51:21They stake out the location, hoping that the family is still around.
0:51:21 > 0:51:24- Oh, yeah, yeah, yeah, yeah! - Do you see?
0:51:24 > 0:51:26Yeah, yeah, yeah! Oh, wow! Wow, wow, wow!
0:51:28 > 0:51:31They're one of the cats we've really been desperate to film
0:51:31 > 0:51:34and to see one for the first time is absolutely incredible.
0:51:36 > 0:51:38That's really special to see.
0:51:38 > 0:51:40I can't believe how lucky we've been.
0:51:44 > 0:51:46While the cats are asleep in their den,
0:51:46 > 0:51:49the team gather rocks to build a hide.
0:51:51 > 0:51:55We're going to leave all the kit here and then back off.
0:51:57 > 0:51:59There might be something new in the environment
0:51:59 > 0:52:00but at least there won't be anyone here.
0:52:00 > 0:52:02Hoping that the behaviour of the cats won't change
0:52:02 > 0:52:04and they will be fine with it.
0:52:06 > 0:52:10The next day, when the mother leaves to go hunting,
0:52:10 > 0:52:13Sue and Paul sneak into position
0:52:13 > 0:52:16while the rest of the team keep a lookout from the hills.
0:52:19 > 0:52:23All they can do now is wait and watch.
0:52:25 > 0:52:28It's not long before the mother returns.
0:52:28 > 0:52:30Sue, can you copy me? Yeah?
0:52:30 > 0:52:33Mother is coming on your right to den.
0:52:33 > 0:52:35OK, copy that. I'll go silent now, thanks.
0:52:44 > 0:52:47I've just filmed my first Pallas's cat.
0:52:49 > 0:52:53They were quite far away, but it's only the first day.
0:52:53 > 0:52:57I wasn't expecting to film anything yet, actually.
0:52:59 > 0:53:02Filming doesn't often start this well
0:53:02 > 0:53:05and, sure enough, their luck doesn't last long.
0:53:07 > 0:53:10This big storm suddenly appeared on the horizon
0:53:10 > 0:53:12and already the wind's really picking up.
0:53:12 > 0:53:13It could be pretty severe
0:53:13 > 0:53:16and I don't want to stick around here very long.
0:53:18 > 0:53:20Exposed on the Mongolian Steppe,
0:53:20 > 0:53:23the winds quickly reach speeds of 50mph.
0:53:28 > 0:53:32The storm is coming up, so we need to tighten up.
0:54:01 > 0:54:03Absolutely insane.
0:54:05 > 0:54:09Phwoar, it is blowing like crazy out there!
0:54:14 > 0:54:17The freak storm has left a trail of destruction.
0:54:17 > 0:54:21Our dining tent is gone...completely.
0:54:24 > 0:54:26It blew our toilet tent to the other side of the mountain.
0:54:26 > 0:54:29I'm glad I wasn't sat on it when that happened!
0:54:33 > 0:54:36While the rest of the team clean up the debris,
0:54:36 > 0:54:38Sue and Gaana head back to the hide.
0:54:43 > 0:54:45It's not looking good.
0:54:46 > 0:54:50I'm wondering whether the storm has moved them on
0:54:50 > 0:54:53because I haven't seen Mum or kittens.
0:54:54 > 0:54:59After 12 hours, there's still been no sign of the cats.
0:55:01 > 0:55:05So we're going to have to get together and have a chat,
0:55:05 > 0:55:07and think about...what to do.
0:55:13 > 0:55:17The cats could have gone anywhere and in any direction.
0:55:17 > 0:55:20With no time to put out more camera traps,
0:55:20 > 0:55:23the team have to search the old-fashioned way.
0:55:23 > 0:55:27It's so difficult finding that little cat in this big landscape.
0:55:27 > 0:55:28Days of searching...
0:55:33 > 0:55:35..turn into weeks.
0:55:35 > 0:55:37No cats again.
0:55:43 > 0:55:47The Pallas's cat is probably one of the most difficult cats to find,
0:55:47 > 0:55:49which is why it's never been filmed before.
0:55:49 > 0:55:54This landscape is vast, these cats are incredibly well camouflaged
0:55:54 > 0:55:56and are very, very good at hiding.
0:56:06 > 0:56:09Finally, Gaana has some good news.
0:56:09 > 0:56:10- You found a den?- Yeah.
0:56:10 > 0:56:13- Ah, fantastic! - SUE:- Hi, Paul, do you copy? Over.
0:56:13 > 0:56:17I've just heard from Gaana that he has found a den.
0:56:17 > 0:56:19Nice one! Great news, great news!
0:56:23 > 0:56:26Sue now has a second chance.
0:56:27 > 0:56:30The new den is high on a hill, sheltered amongst rocks.
0:56:30 > 0:56:34It's the same family and, even better,
0:56:34 > 0:56:36the kittens are now much more active.
0:56:36 > 0:56:41SUE LAUGHS
0:56:41 > 0:56:44It's exactly what the team were hoping to film -
0:56:44 > 0:56:46kittens at play.
0:56:50 > 0:56:53They are the cutest kittens I've ever seen
0:56:53 > 0:56:56and I've filmed quite a few on this series.
0:56:56 > 0:57:00To be that close to little wild bundles of fluff, that was amazing.
0:57:02 > 0:57:06It's a remarkable insight into the life of a remarkable cat.
0:57:11 > 0:57:14Next time, the frontiers of discovery...
0:57:14 > 0:57:17- Just in front of us. - Ah, that's really special!
0:57:17 > 0:57:21- Holy mackerel! - ..getting closer than ever before...
0:57:21 > 0:57:22There you go!
0:57:22 > 0:57:24..to the secret lives of cats.
0:57:26 > 0:57:27There.