It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
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The reindeer is the only mammal that can see UV light.
17
Alligators can live up to 100 years.
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