The leopard (Panthera pardus) is an Old World mammal of the Felidae family and the smallest of the four big cats of the genus Panthera, which also consists of the tiger, lion and jaguar. Leopards that are melanistic, either completely black or very dark in coloration, are one of the big cats known colloquially as black panthers. The leopard is an agile and graceful predator. Although smaller than the other members of Panthera, the leopard is still able to take large prey given a massive skull that well utilizes powerful jaw muscles. Its body is comparatively long for a cat and its legs are short. Head and body length is between 90 and 190 cm (35 and 75 in), the tail reaches 60 to 110 cm (24 to 43 in). Shoulder height is 45 to 80 cm (18-31 in). Males are considerably larger than females and weigh 37 to 90 kg (81 to 198 lbs) compared to 28 to 60 kg (62 to 132 lbs) for females.