Training our young dogs can be very tricky but using dangerous and painful methods is not the way to go.
Cruel "training" devices such as anti-barking shock collars, and prong collars rely on painful punishment
and negative reinforcement. They cause dogs to live in fear of being painfully choked for normal
behavior such as barking, jumping onto surfaces within their own homes, and getting ahead of their
guardians during walks. Positive training methods, in which dogs are rewarded for desirable behavior,
are kinder and more effective.
Shock Collars: Shock collars can cause dogs physical pain, injury (ranging from burns to cardiac
fibrillation), and psychological stress, including severe anxiety and displaced aggression. Individual
animals vary in their temperaments and pain thresholds; a shock that seems mild to one dog might be
severe to another. The anxiety and confusion caused by repeated shocks can lead to changes in a dog's
heart and respiration rate or gastrointestinal disorders. Electronic collars can also malfunction, either
administering no shocks at all or nonstop shocks.
Prong Collars: Prong and choke collars can do much more damage than just yanking and choking a dog.
Depending on the size of the dog, how hard the dog pulls, and how forcefully the person holding the
leash yanks, choke collars can cause serious injuries, including the following:
Intervertebral disc protrusion
Partial or complete fore- or hind-limb paralysis from spinal cord injuries
Damage to the vagus nerve, affecting the function of major organs, including the heart, lungs,
liver, bladder, spleen, and kidneys
A crushed trachea, with partial or complete asphyxiation
Crushed or fractured bones in the larynx
A bruised esophagus
Sharp increases in pressure inside the head, which can cause brain or eye damage and
sometimes prolapse of the eye
Bruising and damage to the skin and tissues in the neck, resulting in the formation of scar tissue
Read about dog training tips that will help your dog, not hurt them: http://www.peta.org/living/companion-animals/dog-training.aspx