The Greyhound is a breed of dog, a sighthound which has been bred for coursing game and greyhound racing. Since the rise in large-scale adoption of retired racing Greyhounds, the breed has seen a resurgence in popularity as a family pet. It is also referred to as an English Greyhound.
According to Merriam-Webster, a Greyhound is "any of a breed of tall slender graceful smooth-coated dogs characterized by swiftness and keen sight", as well as "any of several related dogs," such as the Italian Greyhound.[better source needed]
It is a gentle and intelligent breed whose combination of long, powerful legs, deep chest, flexible spine and slim build allows it to reach average race speeds exceeding 64 kilometres per hour (40 mph). The Greyhound can reach a full speed of 70 kilometres per hour (43 mph) within 30 metres (98 ft), or six strides from the boxes, traveling at almost 20 metres per second (66 ft/s) for the first 250 metres (820 ft) of a race.
Males are usually 71 to 76 centimetres (28 to 30 in) tall at the withers, and weigh on average 27 to 40 kilograms (60 to 88 lb). Females tend to be smaller, with shoulder heights ranging from 66 to 71 centimetres (26 to 28 in) and weights from 25 to 34 kilograms (55 to 75 lb), although weights can be above and below these average weights. Greyhounds have very short fur, which is easy to maintain. There are approximately thirty recognized color forms, of which variations of white, brindle, fawn, black, red and blue (gray) can appear uniquely or in combination. Greyhounds are dolichocephalic, with a skull which is relatively long in comparison to its breadth, and an elongated muzzle.
Greyhounds can be aloof and indifferent to strangers, but are affectionate with their own pack. They are generally docile, lazy, easy-going, and calm.
Greyhounds wear muzzles during racing, which can lead some to believe they are aggressive dogs, but this is not true. Muzzles are worn to prevent injuries resulting from dogs nipping one another during or immediately after a race, when the 'hare' has disappeared out of sight and the dogs are no longer racing but remain excited.
Contrary to popular belief, adult Greyhounds do not need extended periods of daily exercise, as they are bred for sprinting rather than endurance. Greyhound puppies that have not been taught how to utilize their energy, however, can be hyperactive and destructive if not given an outlet, and therefore require more experienced handlers.
Greyhound owners and adoption groups consider Greyhounds wonderful pets. Greyhounds are quiet, gentle and loyal to owners. They are very loving, and enjoy the company of their humans and other dogs. Whether a Greyhound will enjoy the company of other small animals, such as cats, depends on the individual dog's personality. Greyhounds will typically chase small animals; those lacking a high 'prey drive' will be able to coexist happily with toy dog breeds and/or cats. Many owners describe their Greyhounds as "45-mile-per-hour couch potatoes".
Greyhounds live most happily as pets in quiet environments. They do well in families with children, as long as the children are taught to treat the dog properly with politeness and appropriate respect. Greyhounds have a sensitive nature, and gentle commands work best as training methods.
Occasionally, a Greyhound may bark; however, Greyhounds are generally not barkers, which is beneficial in suburban environments, and are usually as friendly to strangers as they are with their own families.
A very common misconception regarding Greyhounds is that they are hyperactive. This is usually not the case with retired racing Greyhounds. Greyhounds can live comfortably as apartment dogs, as they do not require much space and sleep almost 18 hours per day. Due to their calm temperament, Greyhounds can make better "apartment dogs" than smaller, more active breeds.
Many Greyhound adoption groups recommend that owners keep their Greyhounds on a leash whenever outdoors, except in fully enclosed areas. This is due to their prey-drive, their speed, and the assertion that Greyhounds have no road sense. In some jurisdictions, it is illegal for Greyhounds to be allowed off-leash even in off-leash dog parks. Due to their size and strength, adoption groups recommend that fences be between 4 and 6 feet tall, to prevent Greyhounds from jumping over them. As per most breeds being rehomed greyhounds that are adopted after racing tend to need time to adjust to their new lives with a human family. Many guides and books have been published to aid Greyhound owners in helping their pet get comfortable in their new home.
The original primary use of Greyhounds, both in the British Isles and on the Continent of Europe, was in the coursing of deer for meat and sport; later, specifically in Britain, they specialized in competition hare coursing. Some Greyhounds are still used for coursing, although artificial lure sports like lure coursing and racing are far more common and popular. Many leading 300- to 550-yard sprinters have bloodlines traceable back through Irish sires, within a few generations of racers that won events such as the Irish Coursing Derby or the Irish Cup.
Until the early twentieth century, Greyhounds were principally bred and trained for hunting and coursing. During the 1920s, modern greyhound racing was introduced into the United States, England (1926), Northern Ireland (1927), Scotland (1927) and the Republic of Ireland (1927). Australia also has a significant racing culture.
In the United States, aside from professional racing, many Greyhounds enjoy success on the amateur race track. Organizations like the Large Gazehound Racing Association (LGRA) and the National Oval Track Racing Association (NOTRA) provide opportunities for Greyhounds to compete.
Historically, the Greyhound has, since its first appearance as a hunting type and breed, enjoyed a specific degree of fame and definition in Western literature, heraldry and art as the most elegant or noble companion and hunter of the canine world. In modern times, the professional racing industry, with its large numbers of track-bred greyhounds, as well as international adoption programs aimed at re-homing dogs has redefined the breed as a sporting dog that will supply friendly companionship in its retirement. This has been prevalent in recent years due to track closures in the United States. Outside the racing industry and coursing community, the Kennel Clubs' registered breed still enjoys a modest following as a show dog and pet.
Greyhounds are typically a healthy and long-lived breed, and hereditary illness is rare. Some Greyhounds have been known to develop esophageal achalasia, gastric dilatation volvulus (also known as bloat), and osteosarcoma. If exposed to E. coli, they may develop Alabama rot. Because the Greyhound's lean physique makes it ill-suited to sleeping on hard surfaces, owners of both racing and companion Greyhounds generally provide soft bedding; without bedding, Greyhounds are prone to develop painful skin sores. The average lifespan of a Greyhound is 10 to 14 years.
Due to the Greyhound's unique physiology and anatomy, a veterinarian who understands the issues relevant to the breed is generally needed when the dogs need treatment, particularly when anesthesia is required. Greyhounds cannot metabolize barbiturate-based anesthesia in the same way that other breeds can because their livers have lower amounts of oxidative enzymes. Greyhounds demonstrate unusual blood chemistry , which can be misread by veterinarians not familiar with the breed and can result in an incorrect diagnosis.
Greyhounds are very sensitive to insecticides. Many vets do not recommend the use of flea collars or flea spray on Greyhounds if the product is pyrethrin-based. Products like Advantage, Frontline, Lufenuron, and Amitraz are safe for use on Greyhounds, however, and are very effective in controlling fleas and ticks.
Greyhounds have higher levels of red blood cells than other breeds. Since red blood cells carry oxygen to the muscles, this higher level allows the hound to move larger quantities of oxygen faster from the lungs to the muscles. Conversely, Greyhounds have lower levels of platelets than other breeds. Veterinary blood services often use Greyhounds as universal blood donors.
Greyhounds do not have undercoats and thus are less likely to trigger dog allergies in humans (they are sometimes incorrectly referred to as "hypoallergenic"). The lack of an undercoat, coupled with a general lack of body fat, also makes Greyhounds more susceptible to extreme temperatures (both hot and cold); because of this, they must be housed inside. Some greyhounds are susceptible to corns on their paw pads, a variety of methods are used to treat them.
The key to the speed of a Greyhound can be found in its light but muscular build, large heart, highest percentage of fast twitch muscle of any breed, double suspension gallop, and extreme flexibility of its spine. "Double suspension rotary gallop" describes the fastest running gait of the Greyhound in which all four feet are free from the ground in two phases, contracted and extended, during each full stride.
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While similar in appearance to Saluki or Sloughi, DNA sequencing indicates that the greyhound is more closely related to herding dogs. This suggests that Greyhounds are either progenitors to or descendants of herding types. Historical literature by Arrian on the vertragus, the first recorded sighthound in Europe and possible antecedent of the Greyhound, suggested that its origin lies with the Celts from Eastern Europe or Eurasia. Systematic archaeozoology of the British Isles, 1974  ruled out the existence of a true greyhound-type in Britain prior to the Roman occupation, confirmed in 2000. Written evidence of the historic time, the Vindolanda tablets (No 594), from the early period of Roman occupation demonstrates that the occupying troops from Continental Europe either had with them in the North of England, or certainly knew of the vertragus and its hunting use.
All modern pedigree Greyhounds derive from the Greyhound stock recorded and registered first in private studbooks in the 18th century, then in public studbooks in the 19th century, which ultimately were registered with coursing, racing, and kennel club authorities of the United Kingdom. Historically, these sighthounds were used primarily for hunting in the open where their pursuit speed and keen eyesight were essential.
The name "Greyhound" is generally believed to come from the Old English grighund. "Hund" is the antecedent of the modern "hound", but the meaning of "grig" is undetermined, other than in reference to dogs in Old English and Old Norse. Its origin does not appear to have any common root with the modern word "grey" for color, and indeed the Greyhound is seen with a wide variety of coat colors. The lighter colors, patch-like markings and white appeared in the breed that was once ordinarily grey in color. The Greyhound is the only dog mentioned by name in the Bible; many versions, including the King James version, name the Greyhound as one of the "four things stately" in the Proverbs. However, some newer biblical translations, including The New International Version, have changed this to strutting rooster, which appears to be an alternative translation of the Hebrew term mothen zarzir. However, the Douay–Rheims Bible translation from the late 4th-century Latin Vulgate into English translates this term as "a cock."
According to Pokorny the English name "Greyhound" does not mean "grey dog/hound", but simply "fair dog". Subsequent words have been derived from the Proto-Indo-European root *g'her- "shine, twinkle": English grey, Old High German gris "grey, old," Old Icelandic griss "piglet, pig," Old Icelandic gryja "to dawn," gryjandi "morning twilight," Old Irish grian "sun," Old Church Slavonic zorja "morning twilight, brightness." The common sense of these words is "to shine; bright."
n=69, median 9 years 1 month