Rattlesnake mating sessions have been known to last more than 22 hours.
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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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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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Camels and llamas can cross breed. The offspring is called a ‘Cama’.
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Dolphins have names for one another.
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