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.
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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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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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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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