Causes can include:Organophosphate toxicity in cats Insecticides, flea collars, and your dog Anemia in Dogs Bloat in Dogs Salmon Poisoning Disease: Fishing with Your Dog Dilated Cardiomyopathy in Dobermans Boxer Cardiomyopathy (AVCP): A Threat to the Boxer Breed Canine Degenerative Myelopathy: It's in the DNA