The Greyhound is an ancient sighthound type refined in England to chase game by sight. Its deep chest, long legs and flexible back let it top 40 miles per hour. In the United States, most pet Greyhounds are retired racers, usually between two and five years old, so many arrive knowing crates and kennels but not stairs, glass doors or couches.
At home, Greyhounds are often gentle, quiet and affectionate, sprinting briefly and then sleeping for hours. Their thin skin, short coat and lean frame mean heat needs respect and cool mornings can feel sharp. A strong chase instinct means many do best on a leash anywhere unfenced, which matters in a city with canals at nearly every turn. Temperament and prey drive vary from dog to dog.