The Weimaraner (/ˈwaɪmərɑːnər/ WY-mə-rah-nər) is a large dog that was originally bred for hunting in the early 19th century. Early Weimaraners were used by royalty for hunting large game such as boar, bear and deer. The Weimaraner is an energetic hunting dog, prized for its physical endurance and stamina, with a strong, instinctive prey-drive. It may tolerate cats but usually does not, tending to follow the urge to hunt—no matter how long it has known a particular cat—and likely to chase and kill any small animal that enters the garden. A Weimaraner requires frequent exercise and will appreciate games and play. Skin allergies are common among weimeraners. A vet should be consulted if a dog starts to lose hair, itch constantly or develop rashes. Parasites can cause an allergic reaction in addition to the normal irritation resulting from bites.