There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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