Canine Scott syndrome is an inherited blood clotting disorder affecting dogs. Affected dogs are born with platelet defects resulting in inadequate blood clotting at sites of tissue damage. These dogs commonly develop excessive bruising and bleeding associated with surgery, veterinary dental procedures, or traumatic events. In addition, some affected dogs may also develop spontaneous, nontraumatic bleeding episodes including severe nosebleeds, bruising, bleeding in joints, and excessive bleeding during teething. Veterinarians performing surgery on known affected dogs should have ready access to blood banked for transfusions.