Most breeds of small dogs are prone to developing collapsing trachea. This is a condition in which the dog's trachea becomes flattened making breathing extremely difficult. In severe cases, it can lead to death. Many smaller dogs develop this condition because they have a small, weak trachea unlike their much larger realitives with larger, stronger ones. This condition can be aggrivated by using collars because it can cause stress on the trachea when tugged on. For this reason, it is recommen...
