The size and weight varies among breed standards; male collies can stand 55.8 to 66 cm (22 to 26 in) at the shoulder; the female averages 5 cm (2 in) shorter. The males are usually in the weight range (50–70 lbs), and the females are usually 5 to 10 lbs less. Collies in the US are sometimes reported to be over one hundred pounds, but a large collie typically weighs no more than 70 pounds. US and UK standards may differ. The UK standard calls for dogs to be significantly smaller than those under the American Kennel Club.