Border Collie Collapse Syndrome is an exercise induced collapse seen in several breeds including Shetland Sheepdogs. It is not the same as Exercise Induced Collapse of Labrador Retrievers or the result of heat stroke. “Affected dogs are normal at rest and seem healthy. Typical collapse episodes begin 5 – 15 min after onset of exercise and include disorientation, dull mentation or loss of focus; swaying, staggering and falling to the side; exaggerated lifting of each limb while walking and a choppy gait; scuffing of the rear and/or forelegs, and crossing of the legs when turning.”
Researchers at the College of Veterinary Medicine, University of Minnesota are studying the problem. Even though the web page describing the syndrome and study primarily talks about Border Collies, participation of Sheltie owners is welcome and encouraged. There is strong evidence of the problem being a genetic trait, but it is likely to be a more complex one rather than a simple one-locus Mendelian trait. Videos of affected dogs, additional information about the problem and information needed to participate in the study may be found at the following website: http://www.vetmed.umn.edu/departments/veterinary-and-biomedical-sciences/research/canine-genetics-lab/genetic-research/border-collie-collapse
*1st posted in 2014. The research group is still accepting DNA samples from affected dogs.