What is the size of the members of the cat family?

Members of the cat family, known as Felidae, vary significantly in size. The smallest species, the rusty-spotted cat, can weigh as little as 2 to 3.5 pounds, while the largest, the Siberian tiger, can weigh up to 600 pounds or more. Most domestic cats weigh between 5 to 20 pounds. Overall, the size range of felids demonstrates a remarkable diversity within the family.