Keeping your puppy or dog near you and guiding your pet or canine is much easier with a harness. Some canine are born with a congenital abnormality that causes those rings to be weaker and susceptible to collapsing. Other canines are rather more susceptible to having this occur on account of damage. Compared to many other canine breeds, the Shih Tzu has a extra compact face and throat construction. The inner passageways are shorter, and can result in respiratory issues and increased danger of damage including collapsed trachea. The pores and skin on a dog’s neck is actually thinner than that of a human’s .