Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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There's a rare breed of pig that looks like a sheep.
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The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Sloths take two weeks to digest their food.
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In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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