Penguins have a gland above their eye that turns saltwater into freshwater.
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There's a rare breed of pig that looks like a sheep.
14
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Parrot parents "name" their children with a signature call.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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