When people attach a leash to the collar, the leash is already in a “behind position.” The identical goes with regular harnesses, which go “much more behind” and actually encourage the canine to tug. If your canine is a puller, you may typically hear him gasp and gag as the collar puts stress on his neck. This is not solely annoying to the canine, however it can additionally be painful and cause medical problems, especially in small dogs. Look for a lightweight material; you don’t want a lot of weight in your Shih Tzu’s neck. Those with snap buckles are best, versus those belted collars.