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Toy Bulldog
The toy bulldog is an extinct unrecognised breed of small bulldog that existed in England during the 18th and early 19th centuries. The same name is used for unrelated, but similar-appearing dogs, that are mostly modern crosses between bulldogs and pugs, which are also not a recognised dog breed. Original attempts Early dog breeders worked in two different directions, to decrease the weight to a desirable 20 pounds or so and create a new toy bulldog breed: # One method was to downsize the bulldog by selecting smaller individuals for breeding. This was not very successful, due to medical complications with breeding below normal-sized dogs. Natural dwarf bulldog puppies are occasionally borne by normal-sized parents, but they were neither the healthiest, nor the most fertile dogs, and their own puppies were often regular-sized dogs. Thus, this version of the breed was never established. # An alternate attempt at creating a toy bulldog was via crossbreeding French bulldo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Mastiff
The English Mastiff, or simply the Mastiff, is a British list of dog breeds, breed of very large dog of mastiff type. It is 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, mastiff-type dogs or, confusingly, just as "mastiffs". It is the largest living Caninae, canine, outweighing the wolf by up to 50 kg (110 lbs) on average. History Ancien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulldog
The Bulldog is a British breed of dog of mastiff type. It may also be known as the English Bulldog or British Bulldog. It is a stocky, muscular dog of medium size, with a large head, thick folds of skin around the face and shoulders and a relatively flat face with a protruding lower jaw. Selective breeding for appearance has led to increased susceptibility to health problems including brachycephaly, hip dysplasia, heat sensitivity and skin infections. The dogs may not be bred in Norway or the Netherlands, because of concerns about their quality of life. The modern Bulldog was bred as a companion dog from the Old English Bulldog, a now-extinct breed used for bull-baiting until that was outlawed under the Cruelty to Animals Act of 1835. The Bulldog Club (in England) was formed in 1878, and the Bulldog Club of America was formed in 1890. While often used as a symbol of ferocity and courage, the modern Bulldog is generally a friendly, amiable dog. It is commonly kept as a pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toy Dogs
Toy dog traditionally refers to a very small dog or a grouping of small and very small Dog breed, breeds of dog. A toy dog may be of any of various dog types. Types of dogs referred to as toy dogs may include spaniels, pinschers and terriers that have been bred down in size. Not all toy dogs are Lap dog, lap dogs. Small dogs Dogs found in the toy group of breed registries may be of the very ancient Lap dog, lapdog type, or they may be small versions of hunting dogs or working dogs, bred down in size for a particular kind of work or to create a pet of convenient size. In the past, very small dogs not used for hunting were kept as symbols of affluence, as watchdogs, and for the health function of attracting fleas away from their owners. Breeds Most major dog clubs in the English-speaking world have a toy group, under one exact name or another, in which they place breeds of dog that the kennel club categorizes as ''toy'', based on size and tradition. The Kennel Club ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct Dog Breeds
Extinction is the termination of an organism by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. As a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, and mammoths. Through evolution, species arise through the process of speciation. Species become extinct when they are no longer able to survive in changing conditions or against supe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breeder
A breeder is a person who selectively breeds carefully selected mates, normally of the same breed, to sexually reproduce offspring with specific, consistently replicable qualities and characteristics. This might be as a farmer, agriculturalist, or hobbyist, and can be practiced on a large or small scale, for food, fun, or profit. About A breeder can breed purebred pets such as cats or dogs, livestock such as cattle or horses, and may show their animals professionally in assorted forms of competitions. In these specific instances, the breeder strives to meet standards in each animal set out by organizations. A breeder may also assist with breeding animals in the zoo. In other cases, a breeder can be referred to an animal scientist who has the capabilities of developing more efficient ways to produce the meat and other animal products humans eat. Earnings as a breeder vary widely because of the various types of work involved in the job title. Even in breeding small domestic anim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toy Dog
Toy dog traditionally refers to a very small dog or a grouping of small and very small breeds of dog. A toy dog may be of any of various dog types. Types of dogs referred to as toy dogs may include spaniels, pinschers and terriers that have been bred down in size. Not all toy dogs are lap dogs. Small dogs Dogs found in the toy group of breed registries may be of the very ancient lapdog type, or they may be small versions of hunting dogs or working dogs, bred down in size for a particular kind of work or to create a pet of convenient size. In the past, very small dogs not used for hunting were kept as symbols of affluence, as watchdogs, and for the health function of attracting fleas away from their owners. Breeds Most major dog clubs in the English-speaking world have a toy group, under one exact name or another, in which they place breeds of dog that the kennel club categorizes as ''toy'', based on size and tradition. The Kennel Club (UK), the Canadian Kennel Clu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dwarfism
Dwarfism is a condition of people and animals marked by unusually small size or short stature. In humans, it is sometimes defined as an adult height of less than , regardless of sex; the average adult height among people with dwarfism is . ''Disproportionate dwarfism'' is characterized by either Rhizomelia, short limbs or a short torso. In cases of ''proportionate dwarfism'', both the limbs and torso are unusually small. Intelligence is usually normal, and most people with it have a nearly normal life expectancy. People with dwarfism can usually bear children, although there are additional Pregnancy risks, risks to the mother and child depending upon the underlying condition. The most common and recognizable form of dwarfism in humans (comprising 70% of cases) is achondroplasia, a genetic disorder whereby the limbs are diminutive. Growth hormone deficiency is responsible for most other cases. There are many other less common causes. Treatment of the condition depends on the u ... [...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] |
French Bulldog
The French Bulldog () is a French breed of companion dog or toy dog. It appeared in Paris in the mid-nineteenth century, apparently the result of cross-breeding of Toy Bulldogs imported from England and local Parisian ratters."Le bouledogue Français, Ses origines" 'Official breed club created in 1898 (fr)' It is commonly kept as a pet and is among the most frequently registered dogs in a number of countries including Australia, the United Kingdom, and the United States. The breed is susceptible to various health problems as a consequence of being bred for a distinctive appearance, sporting a |
Extinction
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
