When epileptic seizures caused the death in some Parsons Russell Terriers at six to twelve weeks of age, researchers delved into the cause. These puppies’ seizures were so severe that they died and medication would not help them. The researchers at the University of Helsinki found a gene disorder similar to the cause of Alzheimer’s in humans.
They developed a test that can determine if a dog carries this recessive gene. Because the gene is recessive, both the sire and dam must carry it to produce the defect in dogs. Therefore, it is essential that breeders of PRT’s have their dogs tested before they breed.