When a breakthrough in the discovery of the gene mutation that causes arrhythmogenic right ventricular cardiomyopathy (ARVC) in Boxers was announced in April 2009, breeders were ecstatic.

Co-owners Dave Berrey of Toronto, Ontario, Canada, and Jay Serion of Seattle, who handled Decker in shows, consider it important to continue the health testing begun by the breeders. The winningest male Bulldog in the past 20 years, Decker, who earned 18 Bests in Show, is passing on his handsome phenotype and healthy genotype as a stud dog, having currently sired 15 litters.

Dilated cardiomyopathy (DCM) in Doberman Pinschers is a challenging disease in which to identify dogs that will develop a severe case and die, and those that will be mildly affected despite testing positive in genetic screening.

Advances in research of hemangio­sarcoma in Golden Retrievers are helping to identify risk factors for the extremely aggressive and highly malignant canine cancer. The findings may one day be used to identify risk factors in other breeds.

Well-conditioned dogs capture our attention with their intensity and the ease with which they perform their sport.

Canine brucellosis can wipe out a kennel. The highly contagious reproductive disease can cause infertility, abortions and stillbirths in dogs.

Long before fall arrives, serious sporting dog enthusiasts have been working to get their dogs ready. In reality, they never let up from conditioning/training mode, though the intensity of their day-to-day routine may relent a bit in the off-season.