* Sharks, like other fish, have their reproductive organs inside their chests. *
* Cats and dogs can hear ultrasound. *
* A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent. *
* One reason that kittens sleep so much is because a growth hormone is released only during sleep. *
* A dog's naked behind leaves absolutely no bacteria when pressed against carpet. *
* Dogs have been man's pet for over 14,000 years. *
* Sheep can survive for up to two weeks buried in snow drifts. *
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