The Serval (Leptailurus serval) is a three to four foot long African wild cat that is believed to be the ancient ancestor of both the lion and the cheetah. It inhabits the same territory, the African savanna. Servals have small heads and long legs, efficient for chasing prey through the grass. They are also highly intelligent. Servals are the wild cat most often kept as house pets. The large domestic breed Savannah is a cross between a Serval and a domestic cat.