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Articles imported from Science News Daily: Dog News

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Gray wolves are among the largest predators to have survived the extinction at the end of the last ice age. A new study analysing teeth and bones shows that the wolves may have survived by adapting their diet over thousands of years --- from a primary reliance on horses during the Pleistocene, to caribou and moose today.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/UOckykQqSqU

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Dogs are one of humanity's most-beloved animal companions. They share our homes and seem to reciprocate our affections. But could this emotional bond extend into feelings of jealousy? To help answer that question, a team of researchers gauged the reactions of a group of dogs when their owners appeared to shower attention on a perceived rival.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/J4s4NVt8ttE

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Dogs infected with the Leishmania parasite smell more attractive to female sand flies than males, say researchers. Leishmania parasites are transmitted from infected dogs to people by sand flies when they bite. As only female sand flies transmit the parasite, researchers wanted to understand if infection made dogs more attractive to the insect. Globally over 350 million people are at risk of leishmaniasis, with up to 300,000 new cases annually.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/k4_HsRjMNmA

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New research has now confirmed that larger breeds, such as Rottweiler, Great Dane and Rhodesian Ridgeback, have a greater risk of osteosarcoma than smaller breeds, as well as showing that breeds with shorter skulls and legs have lower osteosarcoma risk. The findings could inform future breed health reforms as well as studies into the way tumours develop from normal bone.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/0wcyqC-vnFQ

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If you haven't been the parent or caregiver of an infant in recent years, you'd be forgiven for missing the human milk oligosaccharide trend in infant formulas. These complex carbohydrate supplements mimic human breast milk and act like prebiotics, boosting beneficial microbes in babies' guts. Milk oligosaccharides aren't just for humans; all mammals make them. New research suggests milk oligosaccharides may be beneficial for cats and dogs when added to pet diets.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/9WINjcVg-6Q

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According to a UN-agreement, assistance dogs like guide dogs, signal dogs and medical response dogs are welcome in hospitals and other public places. However, in practice, they are regularly refused entry. Hygiene reasons are often given as the main argument for this. Research now shows that the paws of assistance dogs are cleaner than the shoe soles of their users, and thus, paw hygiene is no reason to ban assistance dogs from hospitals.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/HbGEP1wrk4w

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A study has uncovered a mutation in the IFT122 gene in blind dogs. The gene defect now discovered results in the progressive destruction of photoreceptor cells and retinal dystrophy. IFT122 is a new candidate also for retinal dystrophy in humans. A gene test in support of breeding and diagnostics has been developed based on the finding.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/PH-C4_O-zhU

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By modeling wolves in Yellowstone National Park, researchers have discovered that how a population is organized into social groups affects the spread of infectious diseases within the population. The findings may be applicable to any social species and could be useful in the protection of endangered species that suffer from disease invasion.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/moCGUBjBqbs

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It is often difficult to find out exactly where the individual species can be found and how their populations are developing. According to a new overview, specially trained detection dogs can be indispensable in such cases. With the help of these dogs, the species sought can usually be found faster and more effectively than with other methods.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/mLxDKMChjr0

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Researchers analyzed the dog's mitochondrial genome, and concluded that the animal belonged to a lineage of dogs whose evolutionary history diverged from that of Siberian dogs as early as 16,700 years ago. The timing of that split coincides with a period when humans may have been migrating into North America along a coastal route that included Southeast Alaska.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/N2i3DTAOzsU

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A recent genetic study provides new information on the occurrence of a DVL2 gene defect associated with a screw tail and its relevance to canine constitution and health. The variant was found in several Bulldog and Pit Bull type breeds, and it was shown to result in caudal vertebral anomalies and shortening of the muzzle. The DLV2 variant may also affect the development of the heart.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/gFGqT4IFfvY

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When there is a choice, wolves in Mongolia prefer to feed on wild animals rather than grazing livestock. Previous studies had shown that the diet of wolves in inland Central Asia consists mainly of grazing livestock, which could lead to increasing conflict between nomadic livestock herders and wild predatory animals like wolves.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/Bnl_59N4xto

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Wolves, dogs and dingoes, oh my

Dogs are generally considered the first domesticated animal, while its ancestor is generally considered to be the wolf, but where the Australian dingo fits into this framework is still debated, according to a retired anthropologist.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/pecDyZXk0zk

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