Male Rhodesian Ridgebacks should be 25-27 inches (64-69 cm) at the withers and weigh approximately 85 lb (36.5 kg FCI Standard), females 24-26 inches (61-66 cm) and approximately 70 lb (32 kg). The coat should contain no black hairs, although white is acceptable on the chest and toes. Ridgebacks have a strong, smooth tail, which is usually carried in a gentle curve upwards. The eyes should be round and should reflect the coat color dark in a black muzzle, amber with a brown nose. The brown nose is a recessive gene and is therefore not as common as a black nose.