2/2 Featuring three saltwater crocodiles, two Arctic wolves and a shark ray named Boris.
2/3 Professor Alice Roberts ventures to the areas hit hardest by the cold of the Ice Age.
1/3 Professor Alice Roberts is on the trail of Ice Age beasts including the sabre-toothed cat.
1/2 A flock of gentoo penguins are flown from New Zealand to Birmingham.
14/20 Ben Fogle and Kate Humble meet rats that are trained to hunt for landmines.
13/20 Malaika has been kicked out of the lions' den as her mum has a new litter to care for.
12/20 A new sea lion baby is born by the lake and mum doesn't want anyone too close.
11/20 Winkie the one-wheeled tortoise needs roadside assistance.
Gordon Buchanan goes to meet the world's cutest animals to reveal their secrets.
8/12 Steve has a chilling encounter with a spider that can reach the size of a dinner plate.