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Corneal Dystrophies In Dogs
Corneal dystrophies are a group of diseases that affect the cornea in dogs. Treatment Corneal dystrophy in dogs usually does not cause any problems and treatment is not required. Suboptimal vision caused by corneal dystrophy usually requires surgical intervention in the form of corneal transplantation. Penetrating keratoplasty is commonly performed for extensive corneal dystrophy. Corneal endothelial dystrophy Corneal endothelial dystrophy is an age-related change that affects the inner layer of the corneal, the endothelium. Leakage of fluid into the cornea causes edema, causing a bluish appearance. This will eventually involve the whole cornea. Bullous keratopathy ( blisters in the cornea) may also form, leading to nonhealing and recurrent corneal ulceration. Hyperosmotic agents are sometimes used topically for treatment, but success with these medications is inconsistent and can cause irritation. Bad cases may require a corneal transplant or thermokeratoplasty, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corneal Dystrophy 2
The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. Along with the anterior chamber and lens, the cornea refracts light, accounting for approximately two-thirds of the eye's total optical power. In humans, the refractive power of the cornea is approximately 43 dioptres. The cornea can be reshaped by surgical procedures such as LASIK. While the cornea contributes most of the eye's focusing power, its focus is fixed. Accommodation (the refocusing of light to better view near objects) is accomplished by changing the geometry of the lens. Medical terms related to the cornea often start with the prefix "'' kerat-''" from the Greek word κέρας, ''horn''. Structure The cornea has unmyelinated nerve endings sensitive to touch, temperature and chemicals; a touch of the cornea causes an involuntary reflex to close the eyelid. Because transparency is of prime importance, the healthy cornea does not have or need blood vessels within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaskan Malamute
The Alaskan Malamute () is a large breed of dog that was originally bred for its strength and endurance to haul heavy freight as a sled dog and hound. It is similar to other arctic breeds such as the husky, the spitz, the Greenland Dog, Canadian Eskimo Dog, the Siberian Husky, and the Samoyed. Lineage Although it is believed that the first dogs arrived in the Americas 12,000 years ago, people and their dogs did not settle in the Arctic until the Paleo-Eskimo people 4,500 years ago, followed by the Thule people 1,000 years ago, with both originating from Siberia. Malamutes were thought to be bred by the Malimiut Inupiaq people of Alaska's Norton Sound region. The Malamute has been identified as a basal breed that predates the emergence of the modern breeds in the 19th century. A study in 2013 showed that the Alaskan Malamute has a similar east Asian origin to, but is not clearly related to, the Greenland Dog and the Canadian Eskimo Dog, but contains a possible admixture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Mastiff
The English Mastiff, or simply the Mastiff, is a British dog breed of very large size. Likely descended from the ancient Alaunt and Pugnaces Britanniae, with a significant input from the Alpine Mastiff in the 19th century. Distinguished by its enormous size, massive head, short coat in a limited range of colours, and always displaying a black mask, the Mastiff is noted for its gentle and loving nature. The lineage of modern dogs can be traced back to the early 19th century, but the modern type was stabilised in the 1880s and refined since. Following a period of sharp decline, the Mastiff has increased its worldwide popularity. Throughout its history the Mastiff has contributed to the development of a number of dog breeds, some generally known as mastiff-type dogs or, confusingly, just as "mastiffs". It is the largest living canine, outweighing the wolf by up to 50 kg (110 lbs) on average. Appearance With a massive body, broad skull and head of generally square appearance, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lhasa Apso
The Lhasa Apso ( ) is a non-sporting dog breed originating in Tibet. It has traditionally been used as an interior sentinel. Etymology Lhasa is the capital city of Tibet, and ''apso'' is a word from the Tibetan language. There is some debate over the exact origin of the name; some claim that the word "apso" is an anglicized form of the Tibetan word for goatee ("ag-tshom", ཨག་ཚོམ་) or perhaps "ra-pho" (ར་ཕོ་) meaning "billy goat". It may also be a compound noun meaning "bark-guard" (lit. "ap" པ to bark, and "so" ོ་ to guard). History The Lhasa Apso originated in Tibet. In the early twentieth century some Tibetan dogs were brought to the United Kingdom by military men returning from the Indian subcontinent. These were of mixed types, similar either to what would become the Lhasa Apso or to what would become the Tibetan Terrier; they were collectively known as "Lhasa Terrier". The original American pair of Lhasas was a gift from Thubten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Greyhound
The Italian Greyhound ( it, Piccolo levriero Italiano, italic=no) is an Italian breed of small sighthound. It may also be called the Italian Sighthound. History Small dogs of sighthound type have long been popular with nobility and royalty. Among those believed to have kept them are Frederick II, Duke of Swabia; members of the D'Este, Medici and Visconti families; the French kings Louis XI, Charles VIII, Charles IX, Louis XIII and Louis XIV; Frederick the Great of Prussia; Anne of Denmark; Catherine the Great and Queen Victoria. Dogs of this type have often been represented in paintings, notably by Giotto, Sassetta and Tiepolo. Dogs of this kind were taken in the first half of the nineteenth century to the United Kingdom, where they were known as Italian Greyhounds. The first volume of ''The Kennel Club Calendar and Stud Book'', published in 1874, lists forty of them. The first breed association was the Italian Greyhound Club, founded in Britain in 1900. Registrations by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Retriever
The Golden Retriever is a Scottish breed of retriever dog of medium size. It is characterised by a gentle and affectionate nature and a striking golden coat. It is commonly kept as a pet and is among the most frequently registered breeds in several Western countries. It is a frequent competitor in dog shows and obedience trials; it is also used as a gundog, and may be trained for use as a guide dog. The breed was created by Sir Dudley Marjoribanks at his Scottish estate Guisachan in the late nineteenth century. He cross-bred Flat-coated Retrievers with Tweed Water Spaniels, with some further infusions of Red Setter, Labrador Retriever and Bloodhound. The breed was recognised by the Kennel Club in 1913, and during the interwar period spread to many parts of the world. History The Golden Retriever was developed in Scotland in the nineteenth century by Sir Dudley Marjoribanks (later to become Baron Tweedmouth) from Flat-coated Retrievers judiciously crossed with Twe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Shepherd Dog
The German Shepherd or Alsatian is a German breed of working dog of medium to large size. The breed was developed by Max von Stephanitz using various traditional German herding dogs from 1899. It was originally bred as a herding dog, for herding sheep. It has since been used in many other types of work, including disability assistance, search-and-rescue, police work, and warfare. It is commonly kept as a companion dog, and according to the Fédération Cynologique Internationale had the second-highest number of annual registrations in 2013. History During the 1890s, attempts were being made to standardise dog breeds. Dogs were being bred to preserve traits that assisted in their job of herding sheep and protecting their flocks from predators. In Germany this was practised within local communities, where shepherds selected and bred dogs. It was recognised that the breed had the necessary skills for herding sheep, such as intelligence, speed, strength and keen senses o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Toy Spaniel
The King Charles Spaniel (also known as the English Toy Spaniel) is a small dog breed of the spaniel type. In 1903, the Kennel Club combined four separate toy spaniel breeds under this single title. The other varieties merged into this breed were the Blenheim, Ruby and Prince Charles Spaniels, each of which contributed one of the four colours available in the breed. Thought to have originated in East Asia, toy spaniels were first seen in Europe during the 16th century. They became linked with English royalty in the time of Queen Mary I and were made famous by their association with King Charles II. Members of the breed were owned by Queen Victoria (Dash) and her great-granddaughter Grand Duchess Anastasia Nikolaevna of Russia. The King Charles Spaniel and the other types of toy spaniels were crossbred with the Pug in the early 19th century to reduce the size of the nose, as was the style of the day. The 20th century saw attempts to restore lines of King Charles Spaniels to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rough Collie
The Rough Collie (also known as the Long-Haired Collie) is a long-coated dog breed of medium to large size that, in its original form, was a type of collie used and bred for herding sheep in Scotland. More recent breeding has focused on the Collie as a show dog, and also companion. The breed specifications call for a distinctive long narrow tapered snout and tipped (''semiprick'') ears, so some dogs have their ears taped when young. Rough Collies generally come in shades of sable and white (sometimes mahogany), blue merle, tri-colored, and colour-headed white. Originating in the 19th century, the breed is now well known through the stories of author Albert Payson Terhune about his dog '' Lad'', and later with Eric Knight's character of '' Lassie'' and her novels, movies, and television shows. There is a smooth-coated variety known as a Smooth Collie; some breed organisations, including both the American and Canadian Kennel Clubs, consider smooth-coat and rough-coat collies t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Cocker Spaniel
The American Cocker Spaniel is a breed of sporting dog. It is a spaniel type dog that is closely related to the English Cocker Spaniel; the two breeds diverged during the 20th century due to differing breed standards in the US and the UK. In the United States, the breed is usually called a Cocker Spaniel, while elsewhere in the world, it is called an American Cocker Spaniel to distinguish it from its older English cousin. The word ''cocker'' is commonly held to stem from their use to hunt woodcock in England, while ''spaniel'' is thought to be derived from the breed's origins in Spain. The first spaniel in America came across with the ''Mayflower'' in 1620, but it was not until 1878 that the first Cocker Spaniel was registered with the American Kennel Club (AKC). A national breed club was set up three years later and the dog considered to be the father of the modern breed, Ch. Obo II, was born around this time. By the 1920s the English and American varieties of Cocker had beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavalier King Charles Spaniel
The Cavalier King Charles Spaniel is a British breed of toy dog of spaniel type. Four colours are recognised: Blenheim (chestnut and white), tricolour (black/white/tan), black and tan, and ruby; the coat is smooth and silky. The lifespan is usually between eight and twelve years. The Cavalier King Charles changed dramatically in the late seventeenth century, when it was inter-bred with flat-nosed breeds. Until the 1920s, it shared the same history as the smaller King Charles Spaniel. Breeders attempted to recreate what they considered to be the original configuration – a dog resembling Charles II's spaniel of the English Civil War period, when supporters of the king were known as Cavaliers. History During the early part of the 18th century, John Churchill, 1st Duke of Marlborough, kept red and white King Charles type spaniels for hunting. The duke recorded that they were able to keep up with a trotting horse. His estate was named Blenheim in honour of his victory at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boxer (dog)
The Boxer is a medium to large, short-haired dog breed of mastiff-type, developed in Germany. The coat is smooth and tight-fitting; colors are fawn, brindled, or white, with or without white markings. Boxers are brachycephalic (they have broad, short skulls), have a square muzzle, mandibular prognathism (an underbite), very strong jaws, and a powerful bite ideal for hanging on to large prey. The Boxer was bred from the Old English Bulldog and the now extinct Bullenbeisser, which became extinct by crossbreeding rather than by a decadence of the breed. The Boxer is a member of both The Kennel Club and American Kennel Club (AKC) Working Group.http://www.akc.org/dog-breeds/boxer/#standard "Get to Know the Boxer", 'The American Kennel Club', Retrieved 14 May 2014 The first Boxer club was founded in 1895, with Boxers being first exhibited in a dog show for St. Bernards in Munich the next year. Based on 2013 AKC statistics, Boxers held steady as the seventh-most popular breed of dog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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