Savannas.The Savannah cat is the largest of the domestic cat breeds. A Savannah cat results from a cross between a domestic cat and a serval, a medium-sized, large-eared wild African cat. This hybridization typically produces large and lanky offspring with vibrant spotted coats. This unusual cross became popular among breeders at the end of the 1990s, and in 2001, The International Cat Association (TICA) accepted it as a new registered breed.