Brown hyena expert Ingrid Wiesel seeks her favourite study animal, Tosca, who has disappeared from her home range on Namibia's west coast.
When llamas take over an Arizona street it makes for a nerve-racking rodeo, while an otter tricks a hungry orca and lives to see another day.
Featuring an unusual friendship between a tigress and a lioness, and a giant rabbit that brought happiness to a tabby cat.
See what happens when Africa's wildest animals turn on their own kind in some of the world's most unforgiving battlegrounds.
More incredible animal behaviour, including a pack of hyenas killing a buffalo, a shark biting a cameraman and wild dogs eating an impala.