Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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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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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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