Domestic Feline Cat Skull - The Domestic or House Cat is the most common member of the Felidae family World Wide. There are an estimated 100 million cats in the western world. There are over 100 breeds currently recognized, and that number grows yearly. All of the current breeds of Domestic Cat are decedents of the Wild cat, originally native to Asia and Africa. On Average, our kitten skulls measure 2.25 inches long.