Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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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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