Difficult backgrounds are usually in charge of their smaller populaces, however a couple of committed advocates may be all a breed requires to come back on course. The largest breed of feline is the tiger, which may reach 9 feet (2.74 meters) in length, leaving out the tail. Although some collars may minimize barking in the short-term, no dog bark collar addresses the underlying source of the barking, such as fear, tension or territorial behaviour.