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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, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain, which lies in the North Atlantic, and includes over 100 smaller islands, such as the Isles of Scilly and the Isle of Wight. The area now called England was first inhabited by modern humans during the Upper Paleolithic period, but takes its name from the Angles, a Germanic tribe deriving its name from the Anglia peninsula, who settled during the 5th and 6th centuries. England became a unified state in the 10th century and has had a significant cultural and legal impact on the wider world since the Age of Discovery, which began during the 15th century. The English language, the Anglican Church, and Engli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piebald
A piebald or pied animal is one that has a pattern of unpigmented spots (white) on a pigmented background of hair, feathers or scales. Thus a piebald black and white dog is a black dog with white spots. The animal's skin under the white background is not pigmented. Location of the unpigmented spots is dependent on the migration of Melanoblast, melanoblasts (primordial pigment cells) from the neural crest to paired bilateral locations in the skin of the early embryo. The resulting pattern appears symmetrical only if melanoblasts migrate to both locations of a pair and proliferate to the same degree in both locations. The appearance of symmetry can be obliterated if the proliferation of the melanocytes (pigment cells) within the developing spots is so great that the sizes of the spots increase to the point that some of the spots merge, leaving only small areas of the white background among the spots and at the tips of the extremities. Animals with this pattern may include birds, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caucasian Shepherd Dog
The Caucasian Shepherd Dog or Caucasian Ovcharka is a large livestock guardian dog native to the countries of the Caucasus region, notably Georgia, Armenia, Azerbaijan, Ossetia, and Dagestan. It was developed in the Soviet Union from about 1920 from dogs of the Caucasus Mountains and the steppe regions of Southern Russia. The Caucasus Mountains in Georgia has historically been the principal region of distribution of the Caucasian Shepherd dogs, both in terms of numbers and the quality of the dogs present in the area. History For centuries dogs similar to the Caucasian mountain dogs have served shepherds in the Caucasus Mountains as livestock guardian dogs, defending sheep from predators, mainly wolves and human sheep-thieves. These dogs are distributed over a wide area, and there are considerable regional variations: those in Azerbaijan are fairly tall and lightly-built; those in Dagestan are smaller and roughly square in outline; those of the former Checheno-Ingush ASSR, n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tibetan Mastiff
The Tibetan Mastiff ( bo, འདོགས་ཁྱི, THL: , Wylie: ) * Nepali: * Mongolian: * Hindi/ Garhwali/ Kumaoni: * Kashmiri: * Ladakhi: * Dzongkha: is a large size Tibetan dog breed. Its double coat is medium to long, subject to climate, and found in a wide variety of colors, including solid black, black and tan, various shades of red (from pale gold to deep red) and bluish-gray (dilute black), and sometimes with white markings around neck, chest and legs. Name The term ''mastiff'' was assigned by the Europeans who first came to Tibet because that name was used to refer to nearly all large dog breeds in the West. Early Western visitors to Tibet misnamed several of its breeds, such as the Tibetan terrier, which is not a terrier, and the Tibetan spaniel, which is not a spaniel. A better name for the breed might be the ''Tibetan mountain dog'' or—to encompass the landrace breed throughout its range—the ''Himalayan mountain dog''. Description Appearance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Bernard (dog)
The Saint Bernard or St. Bernard (, ) is a breed of very large working dog from the Western Alps in Italy and Switzerland. They were originally bred for rescue work by the hospice of the Great St Bernard Pass on the Italian-Swiss border. The hospice, built by and named after Italian monk Bernard of Menthon, acquired its first dogs between 1660 and 1670. The breed has become famous through tales of Alpine rescues, as well as for its large size, and gentle temperament. Description The St. Bernard is recognized internationally today as one of the molosser breeds. It is a giant dog. The coat can be either smooth or rough; the smooth coat being close and flat, while the rough is dense, flat, and more profuse around the neck and legs. The colour is typically a red shade with white, or a mahogany brindle with white. Black shading is usually found on the face and ears. The tail is long and heavy, hanging high. The eyes are usually brown, but sometimes can be icy blue, and should have n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zorba (dog)
Aicama Zorba of La-Susa or Zorba (26 September 1981 – 1992) was a male Old English Mastiff who was recognized by Guinness World Records as the heaviest and longest dog in the world. Life Zorba was bred by Mrs I. Prosser on 26 September 1981. His sire and dam were Stablemate's Bruno of Kisumu (American import) and Gildasan Valentine Daisy of Aicama. He was owned by Chris Eraclides of London, England. World records Zorba initially set the record of heaviest dog in September 1987 at . In November 1989, Zorba was recorded as weighing . Zorba stood at the shoulder and was from the tip of his nose to the tip of his tail. See also * Giant dog breed *List of individual dogs This is a list of individual famous actual dogs; for famous dogs from fiction, see List of fictional dogs. Actors Advertising * Axelrod, Basset Hound, appeared in commercials and print ads for Flying "A" Service Station advertisements in ... References {{Reflist Individual dogs 1981 animal birth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liver (color)
At right is displayed the color traditionally called liver. The first recorded use of ''liver'' as a color name in English was in 1686. Liver may also refer to a group of certain types of dark brown color in dogs and horses. Said nomenclature may also refer to the color of the organ. In dogs In dogs, the Liver color is caused by dilution of the eumelanin (black) pigment by the B locus. The gene that causes Liver is recessive, so a BB or Bb dog has normal black pigment. Only a bb dog is Liver. There are several different recessive b genes, but they all turn the coat brown. They are only distinguishable through genetic testing. Liver may also be called different names such as Brown, Chocolate, or Red. Red is a very misleading term, and should be avoided when referring to the color liver because it can be confused for phaeomelanin pigment. This second pigment is what colors all the "true red" or yellow parts of a dog. Liver dilution can also be combined with other genes that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homozygous
Zygosity (the noun, zygote, is from the Greek "yoked," from "yoke") () is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism. Most eukaryotes have two matching sets of chromosomes; that is, they are diploid. Diploid organisms have the same loci on each of their two sets of homologous chromosomes except that the sequences at these loci may differ between the two chromosomes in a matching pair and that a few chromosomes may be mismatched as part of a chromosomal sex-determination system. If both alleles of a diploid organism are the same, the organism is homozygous at that locus. If they are different, the organism is heterozygous at that locus. If one allele is missing, it is hemizygous, and, if both alleles are missing, it is nullizygous. The DNA sequence of a gene often varies from one individual to another. These gene variants are called alleles. While so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merle (dog Coat)
Merle is a genetic pattern that can be in a dog's coat. Merle comes in different colors and patterns and can affect all coat colors. The merle gene creates mottled patches of color in a solid or piebald coat, blue or odd-colored eyes, and can affect skin pigment as well. There are two general types of colored patches that will appear in a merle coat: liver (red merle) and black (blue merle). Some breeds that can be affected by this genetic trait are Carea Leonés, Australian Shepherds and Catahoula Leopard Dogs. This genetic trait should be taken seriously when breeding merles. Health issues are more typical and more severe when two merles are bred together, so it is recommended that a merle be bred with a non-merle dog of any other color. Description Merle can affect all coat colors. The merle forms of brown and black are usually called "red" (though this is not correct; red and brown are genetically different) and "blue" as patches of blue are formed throughout the coat. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominance (genetics)
In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and the second recessive. This state of having two different variants of the same gene on each chromosome is originally caused by a mutation in one of the genes, either new (''de novo'') or inherited. The terms autosomal dominant or autosomal recessive are used to describe gene variants on non-sex chromosomes (autosomes) and their associated traits, while those on sex chromosomes (allosomes) are termed X-linked dominant, X-linked recessive or Y-linked; these have an inheritance and presentation pattern that depends on the sex of both the parent and the child (see Sex linkage). Since there is only one copy of the Y chromosome, Y-linked traits cannot be dominant or recessive. Additionally, there are other forms of dominance such as incomple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locus (genetics)
In genetics, a locus (plural loci) is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. Each chromosome carries many genes, with each gene occupying a different position or locus; in humans, the total number of protein-coding genes in a complete haploid set of 23 chromosomes is estimated at 19,000–20,000. Genes may possess multiple variants known as alleles, and an allele may also be said to reside at a particular locus. Diploid and polyploid cells whose chromosomes have the same allele at a given locus are called homozygous with respect to that locus, while those that have different alleles at a given locus are called heterozygous. The ordered list of loci known for a particular genome is called a gene map. Gene mapping is the process of determining the specific locus or loci responsible for producing a particular phenotype or biological trait. Association mapping, also known as "linkage disequilibrium mapping", is a method of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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