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The discovery of various disease-associated genetic mutations has greatly changed the way some inherited canine diseases are categorized and perceived by the veterinary community. Through the use of genetic testing developed to identify these discovered mutations, various diseases which were once assumed to have a single underlying molecular cause (due to similarity between disease states) have been found in some cases to actually be caused by many different mutations, often in different genes. This phenomenon, known as genetic heterogeneity, elucidates the way genes work together in pathways and how a disruption in different genes of a pathway may result in similar or nearly identical disease states despite seemingly disparate underlying molecular etiologies. Understanding that there may be one of many different genetic mutations responsible for a dog’s clinical signs can help plot a better course for veterinarians to obtain an accurate, definitive diagnosis and in some cases, may alter treatment strategies.

Pet Owner vs Breeder

The accuracy and specificity of an inherited disease diagnosis are particularly important in the world of dog breeding where every potential health issue must be considered prior to breeding. Unlike general pet owners who may not need to know the specific underlying molecular mechanisms of ...

The Irish-bred, Kerry blue terrier (KBT) is historically a well-rounded working dog with its roots in hunting small game and rodents. However, their intelligence and diverse abilities have also led to their success as guard dogs and as a herding breed. Like many terriers, the KBT is known for its high energy and tends to benefit greatly from daily exercise. Though early KBTs were often selected for their tenacity and aggressiveness to perform their duties as hunters and guard dogs, these attributes historically made them less suitable companions for other dogs. However, modern breeding efforts have focused on maintaining their high energy while decreasing tendencies toward aggression.

One of the most striking attributes of the KBT is their characteristic hair coat. Kerry blue terriers are born black, but develop their beautiful, soft and wavy blue/gray coat during the first two years of life in a process of color fading, commonly referred to as “clearing”. Dogs displaying black coloration on the body after 18 months of age are disqualified from the AKC show ring. However, black on the extremities (muzzle, head, ears, tail, and feet) is allowed at any age.

This spirited breed, though relatively healthy, has developed some inherited disease concerns ...

From their roots as a well-rounded Swiss farm dog, the modern Bernese mountain dog (BMD) is well known for its friendly and affectionate demeanor. This intelligent and adaptable breed has gained the love of many Americans since its introduction to the United States in 1926. In 2014 the BMD moved to 31^st place in the AKC registration statistics and appears to be growing in popularity as the breed has moved up 8 places in the rankings since 2009.

Like many purebred dogs, the Bernese mountain dog is known to inherit some health issues that are of major concern to breeders. Unfortunately, genetic discoveries for some of the most concerning inherited issues for BMD breeders, such as a type of cancer known as histiocytic sarcoma, have remained elusive. However, some inherited diseases of Bernese mountain dogs can be avoided through the use of genetic testing technologies and selective breeding practices.

Degenerative Myelopathy

The late-onset neurological disease, degenerative myelopathy (DM) is one such disease that can be prevented through genetic testing. In 2009, a mutation in the canine SOD1 gene was described as a major cause of DM. Since then, the mutation has been reported in over 100 dog breeds including ...

No bones about it, being a great dog breeder is tough work! Picking dams and sires, health testing, monitoring heat cycles, caring for pregnant dams, vaccinating and deworming, and promoting and selling your puppies are just a few of the many tasks one must accomplish to be a top notch breeder.

One task that has historically been overly complex and time consuming for some breeders is getting genetic testing performed on their dogs. In the past, this often meant sending samples off to multiple laboratories to get testing performed because it was unusual for canine genetics laboratories to offer all of the tests needed under one roof. In addition, this situation meant filling out multiple submission forms, obtaining proper samples for each lab, and in some cases, waiting for several weeks for results. When Paw Print Genetics opened the doors for testing in 2013, it marked the beginning of the end for what I have termed the “multi-laboratory genetic testing dilemma” that most dog breeders were used to. Now, with over 140 genetic tests in well over 200 breeds, Paw Print Genetics has made a commitment to make canine genetic testing more convenient, user-friendly, and more affordable.

One important genetic ...