A Few Facts About Cats
* There are more than 500 million domestic cats in the world, with 33 different breeds.
* A cat's heart beats twice as fast as a human heart, at 110 to 140 beats per minute.
* Cats knead with their paws when they're happy.
* Your cat's mood changes as your mood changes.
* During her productive life, one female cat could have more than 100 kittens.
* Cats have 290 bones in their bodies and 517 muscles.