The lifespan of mammals is about 1 and a half billion heartbeats.
127
One litter of kittens can be produced by more than one father.
57
Dogs have four toes on their hind feet, and five on their front feet.
179
Ants don't sleep
15
Americans spend more than 5.4 billion dollars on their pets each year!
10
A full-grown bear can run as fast as a horse.
35
At one 'feeding', a mosquito can absorb one and a half times its own weight in blood.
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