AffectedAnimals:
Dogs, especially older small or toy breeds. Dogs affected by congenital tracheal collapse can show symptoms at an earlier age. Commonly affected breeds include the miniature poodle, Yorkshire terrier, Chihuahua, and Pomeranian.

Overview:
Small breed dogs are particularly susceptible to a condition called tracheal collapse. The tracheal rings, which are made of cartilage, can become weak and fail to keep the trachea open during breathing. When the trachea collapses, air is no longer able to move through the respiratory tract. Depending upon the stage of respiration in which the collapse occurs, air may become trapped within the lungs or blocked from entering them.

A collapse is more likely to occur when the animal is moving air within the airways at a faster rate than normal, or if there is added pressure around the outside of the trachea. Excitement, exercise, obesity, and allergies are factors that may incite tracheal collapse.

1. Normal Tracheal Ring
2. Collapsed Tracheal Ring
3. Collapsed Trachea

Treatment options vary according to the severity of the condition. Some dogs may require stabilization with medications while others may need surgery. Attempts to decrease risk factors, such as placing an obese canine on a diet, can be beneficial in preventing or minimizing the effects of tracheal collapse.