Colts Head Veterinary Services uses a minimally invasive one-meter flexible endoscope, a small flexible tube with a camera which allows your veterinarian to visualize, take diagnostic samples, and treat the upper respiratory tract including nasal passages, sinus openings, pharynx, larynx, guttural pouches, and trachea. Our veterinarians use endoscopy to investigate and potentially treat bloody nose, nasal discharge, bad breath, respiratory noise, poor performance, coughing, and facial swellings. Endoscopy is also an adjunctive tool to localize and relieve esophageal obstructions (chokes) in the upper esophagus and diagnose strictures causing recurrent choking episodes.