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Dogs are excellent models for studying genetics, especially disease genetics. Work done in the last 20 years has shown that dogs share many gene-related disorders with people. Each breed is a closed reproductive population with distinct rates of heritable diseases, which dramatically increases the odds of finding disease-related loci. In creating new dog breeds, we reduce the gene pool within those populations, and fix many alleles. This homogeneous background makes it much easier to map QTLs and perform linkage analyses

Unlike the rats favoured as animal models for many other diseases, dogs develop haemophilia naturally, have enough blood to contribute to research studies and live long enough to reveal long-term outcomes of treatments. "We have a 60-year track record now showing that if it works well in dogs, it's likely going to work well in humans," says Nichols.

Although rabies still causes thousands of deaths globally every year, it has essentially been eradicated from most industrialized countries. Part of the success story is due to an unusual project undertaken by the Swiss prompted by a series of large outbreaks in the 1970s: the large-scale vaccination of wild foxes to stop the epidemic. In this directed case study, students use an easily accessible MS Excel-based model to understand key epidemiological parameters of rabies outbreaks in wild foxes. The simple model allows students also to predict what proportion of foxes needs to be vaccinated to eradicate the virus from the population. The case fits into both ecological and microbiological (epidemiological) courses and offers opportunities to explore zoonotic diseases and "One Health" questions. The mathematical basis of the differential equations in the models is explained, although prior knowledge of calculus is not essential. A key learning outcome is the critical understanding of both the power and limitations of simple epidemiological models. This case was written for an online course but could also be used as a face-to-face activity if students have access to computers in class.

Like humans, some golden retrievers develop Duchenne muscular dystrophy (DMD), a hereditary muscle wasting condition that begins early in life. Using gene therapy, scientists were able to restore muscle function in dogs with the disease, according to a study published today (July 25) in Nature Communications.

Similar to humans who have obsessive compulsive disorder, dogs exhibit compulsive behaviors, in which they might repetitively spin around, chase their tail, bark, chew, or suck on a toy or a part of their body for an excessive amount of time. In the latest study from Tufts University, researchers identified genetic pathways that increase the severity of canine compulsive disorders in Doberman pinschers. This discovery may lead to the development of improved treatments and therapies for obsessive compulsive disorder (OCD) in people. 

Scientists may debate the accuracy of this equivalency, but most people agree that humans live many times longer than their furry friends. And, as it happens, these friends have features that uniquely qualify them to help us speed biomedical research.

Through this method, the researchers were able to identify that the frizzled-6 gene was expressed around eight times more in tumor-forming cell lines. The specific cascade initiated by frizzled-6 and how it affects the development of cancerous cells has yet to be determined. The overexpression of frizzled-6 suggests that the protein either forms tumor cells directly or is an indirect result of other mutated pathways.

Recently, in an article in the New Republic, 'The Animals That Can Save Your Life', journalist Emma Young introduces readers to the emerging science of training animals to detect things humans cannot.