The smallest wildcat today is the Black-footed cat. The females are less than 20 inches (50 cm) long and can weigh as little as 2.5 lbs (1.2 kg).
"Of all the [cat] toys available, none is better designed than the owner himself. A large multipurpose plaything, its parts can be made to move in almost any direction. It comes completely assembled, and it makes a noise when you jump on it."
Stephen Baker