In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
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The reindeer is the only mammal that can see UV light.
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Dogs sometimes fake being sick to get attention.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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