borzoi, breed of tall, swift hound developed in Russia in the early 17th cent., also called Russian wolfhound. It stands from 26 to 31 in. (66-81.2 cm) high at the shoulder and weighs about 85 lb (38.6 kg). Its long, silky coat may be flat, wavy or curly, and forms fringes of longer hair, or feathers, on the chest, back of legs, and tail. The coat may be any color but is usually white with lemon, brindle, tan, gray, or black markings. Originally bred for hunting wolves and coursing hares, it is now most popular as a show competitor and pet. See dog.

Breed of hound developed in Russia. It is descended from the Arabian greyhound and a collielike Russian sheepdog. Formerly known as the Russian wolfhound, it was originally bred to hunt wolves and hares. It is graceful, strong, and swift, attaining a height of about 26–31 in. (66–79 cm) and a weight of 55–105 lbs (25–48 kg). It has a long, narrow head; small ears; a deep but narrow chest; long, muscular hindquarters; and a long, curved tail. Its silky coat is flat or slightly curled and usually is white with darker markings. It is noted for its elegant appearance.

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