The Savannah is a breed of hybrid cat developed in the late 20th century from crossing a serval (Leptailurus serval) with a domestic cat (Felis catus). This hybridization typically produces large and lean offspring, with the serval's characteristic large ears and markedly brown-spotted coats. F1 and F2 male Savannahs can be very large, and in 2016 an F2 male attained a world record for tallest cat at 48.4 centimetres (19.1 in). Show-eligible F4–F5 cats range from 5.0 to 8.2 kilograms (11.0 to 18.1 lb) however, comparable in size to other large domestic cat breeds such as the Maine Coon or Norwegian Forest cat. The Savannah cat is the largest of the cat breeds. A Savannah cat is a cross between a domestic cat and a serval, a medium-sized, large-eared wild African cat. The 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. In May 2012, TICA accepted it as a championship breed.