One of the most common alternatives to a collar is a harness. Veterinarians routinely recommend that dogs, such as pugs with their short noses, and miniature poodles with their propensity for collapsing trachea wear harnesses. However, it's important to chose the right one. In general I avoid harnesses that hook on the back unless you want to train your dog to pull a cart or a sled. These harnesses actually help train your dog to ignore you and pull you because when you pull on the leash to try to gain some control, they direct the dog's attention away from you.
So why do I avoid the fascinating sport dog bark collar? Besides the fact that my philosophy of training is to focus on rewarding the dog's good behaviors and removing rewards for unwanted ones until the dog forms good habits, there are many medical and safety reasons too. Not surprisingly, strong yanking on the neck with a chain can cause health issues. If the force from a dog pulling on a flat collar raises intraocular pressure, imagine how high that pressure must rise when you actually yank the dog with a thin chain! Even if your dog has no eye issues, the fascinating sport dog bark collar, is notorious at exacerbating airway issues. For instance it can worsen coughing in dogs prone to collapsing trachea (weak trachea that flatten more than they should) and affect the ability of dogs with small tracheas, such as Pugs and Bulldogs, to breath. Additionally, dogs may develop neurological damage when the corrections are strong enough. The damage, called Horner’s Syndrome, can result in changes to the pupil in the eye and nerve-induced lameness in the front leg. Lastly, even if you don't use a fascinating sport dog bark collar in the manner described above, fascinating sport dog bark collars should never be left on an unsupervised pet. They can get caught on something and tighten to the point where they strangle the panicked dog.