 Domestic cats are similar in size to the other members of the genus Felis , typically weighing between 4 and 5 kg ( 9 and 10 lb ) . Some breeds , however , such as the Maine Coon , can occasionally exceed 11 kg ( 24 lb ) . Conversely , very small cats , less than 2 kg ( 4 lb ) , have been reported . The world record for the largest cat is 21 kg ( 50 lb ) . The smallest adult cat ever officially recorded weighed around 1 kg ( 2 lb ) . Feral cats tend to be lighter as they have more limited access to food than house cats . In the Boston area , the average feral adult male will weigh 4 kg ( 9 lb ) and average feral female 3 kg ( 7 lb ) . Cats average about 23 – 25 cm ( 9 – 10 in ) in height and 46 cm ( 18 in ) in head / body length ( males being larger than females ) , with tails averaging 30 cm ( 12 in ) in length . 
