Mike and Mark track elephants to a riverbank, where a tension-filled standoff takes place; then they follow three cheetahs.
Sitting exposed in the tracker's seat of a safari vehicle, Mike edges into a pride of feeding lions and then proceeds on foot for an even closer look, carefully avoiding eye contact that could provoke an attack.
A litter of African wild dog puppies draws the attention of Mark, who crawls in for a look.
Mike and Mark drive quad bikes into a pride of lions feeding on a kill. Also: elephants.
Mike Penman and Mark Tennant observe wildlife at close range.
In Kenya, Mike and Mark photograph lions, buffalo, elephants, leopards and rhinos. Also: a cheetah leaps onto their jeep; a jumping bird is observed.
Mike and Mark observe Tanzania's Serengeti plains during the annual migration.
Mike Penman and Mark Tennant stake out drinking holes on the Khwai River in Botswana to examine predators and prey.
Mike and Mark travel to the Zambezi River, observing white rhinos, hippos, crocodiles, bull elephants, lions, leopards and hyenas.
Mike and Mark come face-to-face with a great white shark.