Mammals

Reindeer calf
Discover how these mammals can withstand severe weather. 
Environmental writer Isabelle Groc answers your wild questions. 
Hippos
Discover fascinating facts about hippos. 
A sea otter swimming on its back
Discover incredible facts about this loveable species.
Polar bears, Spitsbergen, Norway.
Discover fascinating facts about polar bears. 
Tiger in Ranthambhore National Par, India
Discover fascinating facts about tigers. 
Stoat
These little brown mustelids are both fast and ferocious, with sinuous bodies and short legs. So how do you tell them apart?
Koala and joey
Millions of years of evolution mean that the koala is highly adapted. But specialisation, a small gene pool and diseases are all posing challenges.
Red kangaroo
Kangaroos have a third leg, say scientists - masquerading as a tail.
Badger
Badgers mate in spring, then delay producing cubs for months. But why?
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