0:00:02 > 0:00:07On Deadly 60, I've had loads of incredible animal ncounters.
0:00:07 > 0:00:10Here's just one of many favourites.
0:00:11 > 0:00:14This is Deadly 60 Bites.
0:00:16 > 0:00:20We've trekked for over five hours in Uganda to reach this clearing
0:00:20 > 0:00:24an we're about to come face to face with mountain gorillas.
0:00:24 > 0:00:27I can see the bushes moving ahead of us.
0:00:30 > 0:00:32I'm shaking, half with excitement,
0:00:32 > 0:00:35half with a little bit of trepidation.
0:00:40 > 0:00:42(There, Johnny.)
0:00:43 > 0:00:45(Wow!)
0:00:47 > 0:00:49(Our first sight!)
0:00:49 > 0:00:52They're all around us. The silverback!
0:00:54 > 0:00:59And there's a little baby, an infant hanging on this branch.
0:00:59 > 0:01:01Let's move up this way.
0:01:09 > 0:01:11'It feels quite vulnerable to be so close,
0:01:11 > 0:01:13'knowing that if he wanted to charge,
0:01:13 > 0:01:15'he'd be on me in a heartbeat!'
0:01:18 > 0:01:22It may seem insane to be thinking about putting an animal
0:01:22 > 0:01:27that is so gentle, so careful and a vegetarian on to the Deadly 60,
0:01:27 > 0:01:30until you get a good look at this guy!
0:01:32 > 0:01:35This is the silverback, the dominant male.
0:01:36 > 0:01:38I have to say,
0:01:38 > 0:01:44there are very few more impressive animals in the whole world.
0:01:44 > 0:01:48He is absolutely massive!
0:01:49 > 0:01:53He's just walking across now. You can see that silver saddle back
0:01:53 > 0:01:58as he goes, and just the strength to brush bushes aside.
0:02:02 > 0:02:04Look at that incredible bulk.
0:02:04 > 0:02:07They are majestic animals.
0:02:11 > 0:02:16'160 kilos of silverback gorilla just vanish into the undergrowth.'
0:02:18 > 0:02:20We try and keep a respectful distance
0:02:20 > 0:02:23so we don't disturb the gorillas as they feed.
0:02:23 > 0:02:27Johnny, Johnny... 'But suddenly a cheeky, confident young male
0:02:27 > 0:02:31'moves menacingly towards us.'
0:02:31 > 0:02:33This is the blackback.
0:02:33 > 0:02:34He's the young male.
0:02:36 > 0:02:37They can be...
0:02:39 > 0:02:41..more of a worry than the silverback
0:02:41 > 0:02:43because they have more to prove.
0:02:43 > 0:02:45Did you see how easily he just pulled
0:02:45 > 0:02:47that tree down to cover himself?
0:02:47 > 0:02:51People who work with gorillas a lot reckon
0:02:51 > 0:02:55they are probably ten times stronger than people.
0:02:55 > 0:02:57They've seen them bend iron bars.
0:02:57 > 0:03:02He's looking at me at the moment, sussing me out.
0:03:02 > 0:03:04'But he knows he's far bigger and stronger than me
0:03:04 > 0:03:07'and I pose no threat to the group.
0:03:08 > 0:03:12'The guides make me stand my ground as he comes in for a closer look.'
0:03:22 > 0:03:25Right. Well, that...
0:03:25 > 0:03:26is a blackback gorilla,
0:03:26 > 0:03:29letting us know who's boss!
0:03:37 > 0:03:40You don't get better animal encounters than this anywhere.
0:03:40 > 0:03:45To be this close to one of the most awe-inspiring
0:03:45 > 0:03:48kings of the jungle, the mountain gorilla.
0:03:48 > 0:03:50They're definitely going on the Deadly 60.
0:03:58 > 0:04:01Subtitles by Red Bee Media Ltd
0:04:01 > 0:04:04E-mail subtitling@bbc.co.uk