Tag archives: progressive retinal atrophy

The only retriever developed exclusively in the United States, the Chesapeake Bay retriever embodies the work ethic and hardiness of the American spirit at a time when the new country was first being settled.

Developed from two Newfoundlands (or perhaps St. Johns water dogs) rescued from a sinking brigantine off the coast of Maryland, Chessie ancestry likely includes flat- and curly-coated retrievers, perhaps spaniels and probably hounds from the local area. This combination of water-loving breeds with strong scenting ability produced a thick-coated and persistent working dog. And work they did.

The Chessie’s primary duty in the early 1800s was that of waterfowl retriever – which remains true today. They were used extensively by market hunters, who with their large punt guns could decimate flocks of ducks and geese, which the retrievers picked up – sometimes hundreds in a single day. Legend has it that Chesapeake Bay retrievers were dual-use dogs – they retrieved waterfowl by day and guarded the boats, guns and day’s haul at night while the market hunters caroused in waterfront saloons – and this is what has led to stereotyped traits in the modern breed (one-man dogs, strong guarding instincts, apt to bite, etc.). While market ...

The season of the bird dog is upon us! Whether it's ducks, pheasants, geese or quail, your four-legged, bird-tracking machine needs to be well-trained and in optimal physical health if you want to improve your chances of collecting a limit. You handled the training through hours and hours of sacrifice, treats, frustration and love… and last year it showed. However, this year you are noticing that something is a little off with ol’ Chopper, and you can’t quite place what it is.

He seems unmotivated and won’t trail like he did last year. He acts like he’s excited for the hunt, but something is holding him back. Is it a health issue? Do you need to take him to the veterinarian? Given the immense financial, time and emotional commitments of purchasing and training a great hunting dog, wouldn’t it be nice to know that you’ve increased the chances of your hunting companion tracking birds with you late into their adult life? 

There are many different diseases or conditions that could take a bird dog off his game. Some of the most common ailments such as osteoarthritis, intervertebral disc disease, traumatic injuries and eye problems are called “acquired” diseases and ...

Some people will say that there is little or no risk for genetic disease in crossbreeding and no need for genetic testing by virtue of the fact that the dogs are crossbred. I use Progressive Retinal Atrophy as an example to illustrate the potential genetic consequences of such breeding, but the premise and the potential risk for disease holds true for any possible genetic condition that affects dogs.

Progressive Retinal Atrophy (PRA) is an inherited progressive eye disease that affects the part of the eye called the retina.  Light striking special cells of the retina (primarily photoreceptor cells called rods and cones) leads to the creation of the picture that is seen by the brain.  The retina is often compared to the film of a camera.  PRAs can progress from vision impairment, to night blindness or to hesitancy in certain situations and lead ultimately to total blindness.  Total blindness in a PRA affected dog may not be recognized until they are taken to an unfamiliar environment while other dogs may be recognized far earlier due to dilated pupils, an attempt by the eye to let in more light, and eye shine that occurs when the retina ...

As most canine breeders can tell you, some of the diseases most commonly tested for in pure bred dogs are the eye diseases falling under the general term, Progressive Retinal Atrophies (PRA).  However, because the various types of PRA can present very similarly, many people are unaware that PRA is not just one disease, but is a general category of disease known to be caused by a number of different genetic mutations in several different genes.  The prevalence of each type of PRA varies by breed and some forms have only been identified in a single breed.  In addition to confusion regarding the variety of disorders grouped under the PRA label, there is often confusion regarding the method used to name the individual types of PRA seen.  A good place to start in understanding the common names of these diseases would be to look at the general types of the disease and how they manifest.  In order to understand the various types however, we must first learn a little about how the eye works.

The retina is a light-sensitive layer of sensory tissue that lines the inner surface of the eye.  Light that shines ...

Every breed of dog comes with drawbacks that we must accept as owners. It could be their size, how much they shed, physical requirements or limitations, or even the likelihood of developing genetic disorders. Knowing what you’re getting into, before you get into it however, can save you thousands of dollars and tons of heartache.

While you might love the looks and personality of a specific breed, you have to be honest with yourself as to whether or not you are capable of providing the dog with its required maintenance and if they honestly fit into your lifestyle.

Perhaps the best example of this honest assessment that I’ve read can be found in an article by Dr. Patty Khuly entitled "This Veterinarian’s Love-Hate Relationship with French Bulldogs."

In the article, Khuly outlines why she loves the French bulldog so much – their personality, looks and cuddle-ability among them. She’s also honest about how she’s come to own several over the course of more than a decade – primarily, owners that couldn’t afford the upkeep on dogs with severe issues, including cleft palate, dermatological problems and an emergency c-sections.

Before you blame the high-cost of veterinary care ...