If you see an old cat running and playing and feeling good, it is a sign the wind is going to blow.
To play with and fondle a cat much will give a person poor health. (Wrong! - Curator)
When you have a tooth pulled, don't leave it lying about. Burn it up. If the cat gets hold of it, the next tooth that comes will be a cat's tooth.
Some prefer to make sure of a sty's (on your eyelid) leaving by touching it with the tail of a black cat.
I wonder where people came up with these sort of things?