The Greyhound is as swift as a ray of light and as graceful as a swallow. They are one of the oldest and purest known breeds. They have been used on practically all kinds of small game, but the hare are their natural quarry. They like to chase small animals and have a high prey drive. Normally a quiet dog, Greyhounds like to curl up on their dog bed and be lazy for most of the day. Outdoors they are very active, loving free space to run and something to chase. They are sleek, smooth dogs that are well muscled specifically for speed. They have small, fine ears with dark round eyes and a thin face. Their tail is long and whip like, and their forelimbs and chest are muscular. They are large sized dogs despite their thin look. Greyhounds are not only fast, but they also have rather large litters. Some litters can be up to 15 puppies. Greyhounds are lively, athletic and friendly. They are aloof with strangers, as most sight hounds are, but remain playful and faithful to their families. They are sensitive dogs, however, and care should be taken to ensure they are not treated harshly. They get along with most people and animals, although their natural instinct is to chase down smaller animals. They get along well with children, and are affectionate and gentle. Many Greyhounds come from racing backgrounds, and therefore may need to be retrained for a home life. The Greyhound makes a wonderful pet, racing companion and keen sight and scent hound.