For those of you missing Planet Earth from your life, you'll enjoy this BBC series which is a follow up to Spy in the Huddle and Spy in the Pod. It involves putting a hidden camera into a fake animal and using it to spy on what they get up to. The intention with this series is to record real animal emotions and display their similarities with humans. The topics discussed for each of the four episodes include love, friendships, mischief, and intelligence.

In tonight's third episode, arctic wolves group together to survive in one of the harshest landscapes on earth, a band of hungry mongoose groom warthogs for tasty morsels - before turning their attention to Spy Warthog - and we see how fish help clean hippos' bodies as well as providing a unique dental service. Amazing stuff altogether.