Got this in an email today. Lipped from: www.cats.alpha.pl Cats have five toes on each front paw, but only four toes on each back paw. Cats are sometimes born with extra toes. This is called polydactly. These toes will not harm the cat, but you should keep his claws trimmed just like any toe. Newborn kittens have closed ear canals that don't begin to open for nine days.When the eyes open, they are always blue at first. They change color over a period of months to the final eye color. Most cats have no eyelashes. A cat cannot see directly under its nose. This is why the cat cannot seem to find tidbits on the floor. You can tell a cat's mood by looking into its eyes. A frightened or excited cat will have large, round pupils. An angry cat will have narrow pupils. The pupil size is related as much to the cat's emotions as to the degree of light. It is a common belief that cats are color blind. However, recent studies have shown that cats can see blue, green and red. A large majority of white cats with blue eyes are deaf. White cats with only one blue eye are deaf only in the ear closest to the blue eye. White cats with orange eyes do not have this disability. A cat can jump even seven times as high as it is tall. Cats lack a true collarbone. Because of this lack, cats can generally squeeze their bodies through any space they can get their heads through. You may have seen a cat testing the size of an opening by careful measurement with the head. Mother cats teach their kittens to use the litter box. Neutering a cat extends its life span by two or three years. Cats can't taste sweets. Cats must have fat in their diet because they can't produce it on their own. Some common houseplants poisonous to cats include: English Ivy, iris, mistletoe, philodendron, and yew. If a male cat is both orange and black it is ( besides being extremely rare ) sterile. To have both the orange and the black coat colors, the male cat must have all or part of both female X chromosomes. This unusual sex chromosome combination will render the male cat sterile.