Collapse on the track.
D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis*; D004285:Dogs; D006470:Hemorrhage / Q000662:veterinary*; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D009043:Motor Activity; D010264:Paraplegia / Q000662:veterinary*; D011859:Radiography