Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
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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 group of kittens is called a "kindle".
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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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Gorillas can catch human colds and other illnesses.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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