- Cats do not scratch on furniture to sharpen their claws. They are tearing off the ragged edges of the sheaths of their talons, which they shed regularly throughout the year.
- Cats have little or no collarbone.
- A group of cats is called a clowder. A group of kittens is a kendle.
- In Japan, tortoiseshell cats are thought to predict storms.
- The term ailurophobe –one who fears cats – comes from Herodotus, the 5th century BC Greek historian, who called the cats he met in Egypt ailuroti: "tail wavers." An ailurophile is a person who loves cats.
- Why do cats get stuck in trees? Their claws are constructed perfectly for climbing up, and impossibly for climbing down – they curve the wrong way.
- Cats discriminate brightness seven times better than humans. The tapetum lucidum, a membrane that coats the eyes reflects the light.
- The cat is one of only a few animals that can stare fixedly into the human eye.
- The term "tabby" which describes a color pattern of stripes or mottling on cats, comes from the Spanish word "tabi" a cloth that resembles watered silk.
- Cats have the greatest eye volume in proportion to its body weight of all mammals.
- The cat, the giraffe, and the camel are the only mammals that walk by moving the front and hind legs first on one side, then the other.
- Cats purr at 26 cycles per second, the same as an idling diesel engine.
- The word "cat" first came into popular use during the 4th century. Palladius recommended the cattus be used to protect the artichoke gardens from vermin.
- Garfield's creator Jim Davis does not own a cat. His wife is allergic.
- Superstition: Giving your loved one a black kitten will bring good luck. But under no circumstances give them a dog.