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Science Daily: Dog News

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Before retinal cells die, they regenerate, blindness study finds

In a new study, researchers have shown that retinal cells in three distinct forms of canine early-onset blindness possess an unexpected feature: they temporarily rejuvenate. Further investigation into the reasons for this period of retinal neuron proliferation could lead to molecular targets for intervening in cell death and maintaining functional photoreceptor cells and a working retina. View the source article
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Homeless youth with pets have benefits, challenges

Homeless youth with pets are less likely to engage in potentially harmful behavior, more likely to open up to veterinarians about their personal challenges and generally less depressed, a Canadian study has shown. View the source article
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Increase in the number of dog attacks on guide dogs in the UK

Reported dog attacks on guide dogs have risen significantly over a five year period, finds a study. A total of 629 attacks were reported between 2010 and 2015, with an increase from an average of three per month in 2010 to eleven attacks per month in 2015. The authors say it is not clear whether this reflects higher levels of reporting or a real trend. View the source article
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Magnetoreception molecule found in the eyes of dogs, primates

The magnetic sense in migratory birds has been studied in considerable detail: unlike a boy scout's compass, which shows the compass direction, a bird's compass recognizes the inclination of the magnetic field lines relative to Earth's surface. Now scientists report that dog-like carnivores and some primate species may have a magnetic compass similar to that of birds. View the source article
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Forensic odorology scientifically validated

Odorology is a technique that uses specially-trained dogs to identify human scent. It is used in police investigations to establish that an individual has been at the scene of a crime. However, there is no international norm on how these dogs are trained. View the source article
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Wolf species have ‘howling dialects’

Largest quantitative study of howling, and first to use machine learning, defines different howl types and finds that wolves use these types more or less depending on their species, resembling a howling dialect. Researchers say findings could help conservation efforts and shed light on the earliest evolution of our own use of language. View the source article
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Dogs accelerate the advance of new cancer treatments for both pets and people

A new review suggests integrating dogs with naturally occurring cancers into studies of new drug therapeutics could result in better treatments for our four-legged friends while helping inform therapeutic development for human cancers. The review hopes to close the gap between human and canine cancer research, and accelerate the knowledge developed by studying cancer in both people and pets, a field known as comparative oncology. View the source article
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Half of the large carnivore attacks are due to the imprudence of human behavior

Close to 50 percent of large carnivore attacks on humans have involved risk-taking human behaviors. This is one of the main conclusions reached by a study which have analyzed the circumstances of 700 documented attacks of six carnivore species (brown bear, black bear, polar bear, puma, wolf and coyote) since 1955 in the United States, Canada, Sweden, Finland, Russia and Spain. View the source article
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No evidence found for 'black dog syndrome'

Black Dog Syndrome (BDS) does not exist in animal shelters, say scientists. BDS is the idea that black dogs wait longer to be adopted than dogs of other colors. The study also concluded that age and breed group were more important than coat color when it came to adoptability. For example, bully breeds, which can include American pit bull terriers, American Staffordshire terriers or Staffordshire bull terriers, face disproportionately longer stays in shelters. View the source article
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You can teach an old dog new tricks, but younger dogs learn faster

Aging affects the cognitive abilities of dogs, as a recent study shows. A team of scientists studied dogs of different ages working on a specially designed touchscreen and discovered that although all dogs were capable of learning, older dogs learnt more slowly than younger ones. No age-related differences were found regarding long-term memory. View the source article
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Two thirds of cattle attacks on people involve dogs, new study finds

Dog owners are being urged to remember to be vigilant with their pets when walking near cows in the countryside, following a new review into cattle attacks. This project reviewed details of negative interactions between the public and cattle, to identify risk factors for cattle attacks, and highlight the availability and usefulness of guidance on walking among livestock. View the source article
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Photos show elusive bush dog to be widespread in Panama

New camera trap photos capture the elusive bush dog in Panama on its way North as it expands out of South America. Bush dogs, Speothos venaticus, are short-legged and stubby, standing only about a foot tall at the shoulder. They live mainly in tropical forests but have also been recorded in fragmented and altered habitats. Hunting in packs of up to 10 animals, bush dogs give high-pitched whines to maintain contact and yap like puppies when they chase their prey. View the source article
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Bear's best friends

A new method uses “detection dogs,” genetic analysis, and scientific models to assess habitat suitability for bears in an area linking the Greater Yellowstone Ecosystem (GYE) to the northern U.S. Rockies. View the source article
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Safe to cuddle with pets while home with a cold or flu

An infectious disease expert, while stopping short of actually prescribing in-home “pet therapy” for colds or flu, says that if having your companion by your side makes you feel better, go right ahead. Pets won’t catch or spread human viruses. View the source article
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Plague-riddled prairie dogs a model for infectious disease spread

Sporadic outbreaks of plague among black-tailed prairie dogs is an ideal model for the study of infectious zoonotic disease, say biologists. Plague doesn't usually kill people these days, but it's alive and well among the millions of ground-dwelling rodents of Colorado and other western states, notably the black-tailed prairie dog. They're resilient critters, though: following wholesale destruction of colonies, they seem to repopulate with a vengeance. View the source article
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