EN
Endoscopy of the respiratory system was performed on 15 dogs of various breeds and sex, aged between 1-11 years, over 10 kg body weight, using an Olympus XQ 20 type pediatric fiberoscope connnected to an Olympus CLE 10 type feeder. Five clinically healthy dogs were endoscopied to determine the principles of the preparation of the animals for examination and examination techniques. In 10 dogs with respiratory disorders diagnostic bronchoscopy was performed. During fiberoscopy the animals were under general anaesthesia. Bronchoscopy was concluded to be very helpful, in some cases the only method for the diagnosis of canine respiratory disorders. However, bronchoscopy is recommended only in justifiable cases after a completion of clinical and radiological examination.