The Borzoi is a breed of dog also called the Russian Wolfhound. They have medium-length, slightly curly hair and are similar in shape to Greyhounds. They are a member of the sighthound family.
Appearance
Borzoi can come in any color or color combination. As a general approximation, "long haired greyhound" is a useful description. The long top-coat is silky and quite flat, with varying degrees of waviness or curling. The soft undercoat thickens in winter or cold climates but is shed in hot weather to prevent overheating. In its texture and distribution over the body, the Borzoi coat is unique.
The Borzoi is a large variety of sighthound, with males frequently reaching in excess of 100 pounds (45 kg). Males should stand at least 28 inches (about 70 centimeters) at the shoulder, while females shouldn't be less than 26 inches (about 66 centimeters). Despite their size the overall impression is of streamlining and grace, with a curvy shapeliness and compact strength. The Borzoi might be said to be the Porsche of sighthounds, if the Irish Wolfhound is the Range Rover.
Temperament
The Borzoi is a quiet, intelligent, moderately active, independent dog. They adapt very well to suburban living, provided they have a spacious yard and regular opportunities for free exercise.
Most adult Borzoi are almost mute, barking only very rarely. They are gentle, sensitive dogs with gracious house-manners and a natural respect for humans. Borzoi should never display dominance over people. However they are sometimes nervous around children and need to be introduced to them at an early age if they are to be the pet in a young family.
Many Borzoi do well in competitive obedience and agility trials with the right kind of training, but it is not an activity that comes naturally to them. They are fast learners who quickly become bored with repetitive, apparently pointless, activity, and they can be very stubborn when they are not properly motivated. Like other sighthounds they cannot understand or tolerate harsh treatment or training based on punishment, and will be extremely unhappy if raised voices and threats are a part of their daily life.
These are dogs used to pursue, or "course," game and they have a strong instinct to chase things that run from them. Borzoi are built for speed and can cover incredible distances in a very short time. They need a fully-fenced yard if automobile traffic is present within several miles of their home. For off-lead exercise they need a very large field or park, either fully fenced or well away from any traffic, to ensure their safety.
Borzoi do not have strong territorial drives compared to breeds such as Mastiffs and German Shepherds, and they are definitely not to be thought of as a "fighting" or "guard dog". They cannot be relied on to raise the alarm upon sighting a human intruder.
Generally, Borzoi should not be territorially aggressive to other domestic dogs. Against wolves and other wild canids, they are born with specialized skills, but these are quite different from the dog-fighting instincts seen in some breeds. It is quite common for Borzoi at play to course (run down) another dog, seizing it by the neck and holding it immobile. Young pups do this with their littermates, trading off as to who is the prey. It is a specific hunting behavior, not a fighting or territorial domination behavior.
Borzoi can be raised very successfully to live with cats and other small animals provided they are introduced to them at a young age. Some, however, will possess the hunting instinct to such a degree that they find it impossible not to chase a cat that is moving quickly. The instinct is triggered by movement and much depends on how the cat behaves.