Kittens knead with their paws when they're happy. If your cat is near you, and her tail is quivering, this is the greatest expression of love your cat can give you. If her tail starts thrashing, her mood has changed Time to distance yourself from her. More than 35,000 kittens are born in the U.S. each year. Cats have 290 bones in their bodies, and 517 muscles. Source
Kittens
Facts about Kittens