Collapse of the trachea in two calves.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000503:physiopathology* / Q000601:surgery; D004417:Dyspnea / Q000209:etiology / Q000662:veterinary; D008297:Male; D014135:Tracheal Stenosis / Q000503:physiopathology / Q000601:surgery / Q000662:veterinary*; D014140:Tracheotomy / Q000662:veterinary