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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Penguins have a gland above their eye that turns saltwater into freshwater.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
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