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Borzoi
The Borzoi or Russian Hunting Sighthound is a Russian breed of hunting dog of sighthound type. It was formerly used for wolf hunting; until 1936, the breed was known as the Russian Wolfhound. Etymology The system by which Russians over the ages named their sighthounds was a series of descriptive terms rather than actual names. is the masculine singular form of an archaic Russian adjective that means 'fast'. ('fast dog') is the basic term for sighthounds used by Russians, though is usually dropped. The name derived from the word , which means 'wavy, silky coat', just as (as in hortaya borzaya) means shorthaired. In modern Russian, the breed commonly called the Borzoi is officially known as . Other Russian sighthound breeds are (from the steppe), called ; and (from the Crimea), called . History The Borzoi originated in the sixteenth century Russia by crossing Saluki and European sighthounds with thick-coated Russian breeds. The Borzoi was popular with the Tsars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wolf Hunting With Dogs
Wolf hunting with dogs is a method of wolf hunting which relies on the use of hunting dogs. While any dog, especially a hound used for hunting wolves may be loosely termed a "wolfhound", several dog breeds have been specifically bred for the purpose, some of which, such as the Irish Wolfhound, have the word in their breed name. Reaction Accounts as to how wolves react to being attacked by dogs vary, though John James Audubon wrote that young wolves generally show submissive behaviour, while older wolves fight savagely. As wolves are not as fast as smaller canids such as coyotes, they typically run to a low place and wait for the dogs to come over from the top and fight them. Theodore Roosevelt stressed the danger cornered wolves can pose to a pack of dogs in his ''Hunting the Grisly and Other Sketches'': The fighting styles of wolves and dogs differ significantly; while dogs typically limit themselves to attacking the head, neck and shoulder, wolves will attack the extr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saluki
The Saluki or Persian hound (Persian:سگ تازی، Arabic: سلوقي) is a standardised breed developed from sighthounds – dogs that hunt primarily by sight rather than strong scent – that was once used by nomadic tribes to run down game animals. The dog was originally bred in the Fertile Crescent. The modern breed is typically deep-chested and long-legged, and similar dogs appear in medieval and ancient art. The breed is most closely related to the Afghan hound, a basal breed that predates the emergence of modern breeds in the 19th century, and the Saluki has been purebred both in the Middle East, including by royalty, since at least that era, and in the West (especially in Britain and Germany) since the 1840s (with breed standards established in the West and the Middle East around the 1920s–1930s), though as a free-breeding landrace, similar dogs are common as feral animals in the Middle East. A related standardised breed is the north African Sloughi. The saluki is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sighthound
Sighthounds (also called gazehounds) are a Dog type, type of hound dog that hunts primarily by sight and speed, unlike scent hound, scent hounds, which rely on scent and endurance. Appearance These dogs specialize in pursuing prey, keeping it in sight, and overpowering it by their great speed and agility. They must be able to detect motion quickly, so they have keen vision. Sighthounds must be able to capture fast, agile prey, such as deer and hares, so they have a very flexible back and long legs for a long stride, a deep chest to support an unusually (compared to other dogs) large heart, very efficient lungs for both Anaerobic exercise, anaerobic and Aerobic exercise, aerobic sprints, and a lean, wiry body to keep their weight at a minimum. Sighthounds have unique anatomical and physiological features, likely due to intentional selection for hunting by speed and sight; laboratory studies have established reference intervals for hematology and serum biochemical profiles in sigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sighthounds
Sighthounds (also called gazehounds) are a type of hound dog that hunts primarily by sight and speed, unlike scent hounds, which rely on scent and endurance. Appearance These dogs specialize in pursuing prey, keeping it in sight, and overpowering it by their great speed and agility. They must be able to detect motion quickly, so they have keen vision. Sighthounds must be able to capture fast, agile prey, such as deer and hares, so they have a very flexible back and long legs for a long stride, a deep chest to support an unusually (compared to other dogs) large heart, very efficient lungs for both anaerobic and aerobic sprints, and a lean, wiry body to keep their weight at a minimum. Sighthounds have unique anatomical and physiological features, likely due to intentional selection for hunting by speed and sight; laboratory studies have established reference intervals for hematology and serum biochemical profiles in sighthounds, some of which are shared by all sighthounds a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hortaya Borzaya
The Chortai, sometimes spelt Chortaj, is a breed of sighthound from Ukraine and Russia. The Chortai is said to resemble a cross between a Greyhound and a short haired Borzoi, being a quite heavily built running hound but nevertheless displaying typical sighthound features. The Chortai is believed to have been developed from the now extinct Krymstaja and Gorskaja breeds and was a favourite breed of the Russian nobility; one was exhibited at the London Zoo in 1829 as a Russian Greyhound although otherwise they have rarely been seen outside their own country. After the October Revolution remnants from the abandoned kennels of the nobility were widely crossed with local hound varieties producing what is now known as the South Russian Steppe Hound, despite this the breed received recognition from the Soviet authorities at the Cynological Congress in Moscow in 1952. The breed's numbers steadily declined under the Soviet Union to the point of near extinction, but with the collapse of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Murmur
Heart murmurs are unique heart sounds produced when blood flows across a heart valve or blood vessel. This occurs when turbulent blood flow creates a sound loud enough to hear with a stethoscope. The sound differs from normal heart sounds by their characteristics. For example, heart murmurs may have a distinct pitch, duration and timing. The major way health care providers examine the heart on physical exam is heart auscultation; another clinical technique is palpation, which can detect by touch when such turbulence causes the vibrations called cardiac thrill. A murmur is a sign found during the cardiac exam. Murmurs are of various types and are important in the detection of cardiac and valvular pathologies (i.e. can be a sign of heart diseases or defects). There are two types of murmur. A functional murmur is a benign heart murmur that is primarily due to physiologic conditions outside the heart. The other type of heart murmur is due to a structural defect in the heart itsel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obedience Training
Dog training is a type of animal training, the application of behavior analysis which uses the environmental events of antecedents (trigger for a behavior) and consequences to modify the dog behavior, either for it to assist in specific activities or undertake particular tasks, or for it to participate effectively in contemporary domestic life. While training dogs for specific roles dates back to Roman times at least, the training of dogs to be compatible household pets developed with suburbanization in the 1950s. A dog learns from interactions it has with its environment. This can be through classical conditioning, where it forms an association between two stimuli; non-associative learning, where its behavior is modified through habituation or sensitisation; and operant conditioning, where it forms an association between an antecedent and its consequence. Most working dogs are now trained using reward-based methods, sometimes referred to as positive reinforcement training. Ot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purebred
Purebreds are cultivars of an animal species achieved through the process of selective breeding. When the lineage of a purebred animal is recorded, that animal is said to be pedigreed. Purebreds breed true-to-type, which means the progeny of like-to-like purebred parents will carry the same phenotype, or observable characteristics of the parents. A group of like purebreds is called a pure-breeding line or strain. True breeding In the world of selective animal breeding, to "breed true" means that specimens of an animal breed will breed true-to-type when mated like-to-like; that is, that the progeny of any two individuals of the same breed will show fairly consistent, replicable and predictable characteristics, or traits with sufficiently high heritability. A puppy from two purebred dogs of the same breed, for example, will exhibit the traits of its parents, and not the traits of all breeds in the subject breed's ancestry. Breeding from too small a gene pool, especially direct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongrel
A mongrel, mutt, or mixed-breed dog is a dog that does not belong to one officially recognized breed, including those that result from intentional breeding. Although the term ''mixed-breed dog'' is sometimes preferred, many mongrels have no known purebred ancestors. Crossbreed dogs, and " designer dogs", while also a mix of breeds, differ from mongrels in being intentionally bred. At other times, the word ''mongrel'' has been applied to informally purpose-bred dogs such as curs, which were created at least in part from mongrels, especially if the breed is not officially recognized. Although mongrels are viewed as of less commercial value than intentionally bred dogs, they are thought to be less susceptible to genetic health problems associated with inbreeding (based on the theory of heterosis), and have enthusiasts and defenders who prefer them to intentionally bred dogs. Estimates place the prevalence of mongrels at 150 million animals worldwide. Terminology Mixed-breed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echocardiograph
Echocardiography, also known as cardiac ultrasound, is the use of ultrasound to examine the heart. It is a type of medical imaging, using standard ultrasound or Doppler ultrasound. The visual image formed using this technique is called an echocardiogram, a cardiac echo, or simply an echo. Echocardiography is routinely used in the diagnosis, management, and follow-up of patients with any suspected or known heart diseases. It is one of the most widely used diagnostic imaging modalities in cardiology. It can provide a wealth of helpful information, including the size and shape of the heart (internal chamber size quantification), pumping capacity, location and extent of any tissue damage, and assessment of valves. An echocardiogram can also give physicians other estimates of heart function, such as a calculation of the cardiac output, ejection fraction, and diastolic function (how well the heart relaxes). Echocardiography is an important tool in assessing wall motion abnormality in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Breed
A dog breed is a particular type of dog that was purposefully bred by humans to perform specific tasks, such as herding, hunting, and guarding. Dogs are the most variable mammal on Earth, with artificial selection producing upward of 360 globally recognized breeds. These breeds possess distinct traits related to morphology, which include body size and shape, tail phenotype, fur type, etc., but are only one species of dog. Their behavioral traits include guarding, herding, and hunting, and personality traits such as hyper-social behavior, boldness, and aggression. Most breeds were derived from small numbers of founders within the last 200 years. As a result of their adaptability to many environments and breedability for human needs, today dogs are the most abundant carnivore species and are dispersed around the world. A dog breed will consistently produce the physical traits, movement and temperament that were developed over decades of selective breeding. For each breed they rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitral Regurgitation
Mitral regurgitation (MR), also known as mitral insufficiency or mitral incompetence, is a form of valvular heart disease in which the mitral valve is insufficient and does not close properly when the heart pumps out blood. Section: Valvular Heart Disease Rupture or dysfunction of the papillary muscle are also common causes in acute cases, dysfunction, which can include mitral valve prolapse.VOC=VITIUM ORGANICUM CORDIS, a compendium of the Department of Cardiology at Uppsala Academic Hospital. By Per Kvidal September 1999, with revision by Erik Björklund May 2008 Pathophysiology The pathophysiology of MR can be broken into three phases of the disease process: the acute phase, the chronic compensated phase, and the chronic decompensated phase. Acute phase Acute MR (as may occur due to the sudden rupture of the chordae tendinae or papillary muscle) causes a sudden volume overload of both the left atrium and the left ventricle. The left ventricle develops volume overload because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
