They are 58 to 69 cm (23 to 27 inches) tall at the withers. According to the AKC standard for the breed, larger dogs are preferred by conformation judges. Acceptable colors for bloodhounds are black, liver, tan, and red. The breed also suffers an unusually high incidence of eye, skin, and ear ailments; thus these areas should be inspected frequently for signs of developing problems. Owners should be especially aware of the signs of bloat, which is both the most common illness and the leading cause of death of Bloodhounds. The thick coat gives the breed the tendency to overheat quickly. In Medieval hunting the typical use of the Bloodhound was as a 'limer', or 'lyam-hound', that is a dog handled on a leash or 'lyam', to find the hart or boar before it was hunted by the pack hounds (raches).