The colossal squid has the largest eyes in the world.
4
The ancestor of all domestic cats is the African Wild Cat which still exists today.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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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.
10
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9