Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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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.
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Squirrels forget where they hide about half of their nuts.
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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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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Early American humans hunted car-size armadillos and used their shells for houses.
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In Australia, there are spiders big enough to eat snakes.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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