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By 2020, more than eight genes in the canine genome have been verified to determine coat color. [3] Each of these has at least two known alleles. Together these genes account for the variation in coat color seen in dogs. Each gene has a unique, fixed location, known as a locus, within the dog genome.
A dog's coat is composed of two layers: a top coat of stiff guard hairs that help repel water and shield from dirt, and an undercoat of soft down hairs, to serve as insulation. [1] Dogs with both under coat and top coat are said to have a double coat. Dogs with a single coat have a coat composed solely of guard hairs, with little or no downy ...
Coren's book presents a ranked list of breed intelligence, based on a survey of 208 dog obedience judges across North America. [10] When it was first published there was much media attention and commentary in terms of both pros [11] and cons. [12] Over the years, Coren's ranking of breeds and methodology have come to be accepted as a valid description of the differences among dog breeds in ...
When a dog has wild-type alleles at all three genes, it will have a yellow coat. When the dog has a loss-of-function allele at MC1R, it will have a yellow coat regardless of the genes it carries on the other two genes. Only a dominant black allele at CBD103 will produce a black coat color in dogs possessing wild-type alleles at MC1R and Agouti. [8]
The early history of the Smooth Collie, like that of many dog breeds, is a matter of speculation. Even the origin of the breed's name is unclear, variously claimed to describe the early shepherd dog's dark colour ("coaly") or derived from the name of a breed of sheep with black faces once commonly kept in Scotland ("Colley") or derived from an Anglo-Saxon word meaning "useful."
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In 2013, Colorado listed rescue dogs and cats as the state pet, [20] [21] [22] as did Tennessee in 2014 [23] and Delaware in 2023 replacing the Golden Retriever. [24] California also named the shelter pet as its state pet in 2015 because of all the abandoned shelter pets each year.
Johnathan is dog dad to Teddy, a very spoiled Golden Retriever with the coolest doghouse you've ever seen. Johnathan gave Teddy a list of chores to get done on Monday, August 26th, and believe it ...