Biting is the most serious behavior problem exhibited by dogs. By properly diagnosing the cause of your dog's aggressiveness, you'll be able to work toward containing it.

Instructions
Things You'll Need:
Basket Muzzles
Dog Body Harnesses
Dog Bones
Dog Collars
Dog Leashes
Dog Training Leashes/collars
Dog Treats
Restraining Harnesses For Dogs

Step 1 : Recognize the type of aggression - fear-related, possessive, dominant, intraspecific (dog to dog), predatory (dog to cats, sheep or infants), punishment or pain elicited, protective or territorial.

Step 2 : Consult an authority, ideally a veterinary behaviorist from the American Veterinary Medical Association.

Step 3 : Avoid situations that elicit aggressive behavior - for instance, a park with unleashed dogs - if your dog exhibits intraspecific aggressive behavior.

Step 4 : Teach obedience commands using positive reinforcement methods.

Step 5 : Fit your dog with a head halter while training, a humane way to treat and control your dog. Use this option only on a temporary basis.

Step 6 : Fit your dog with a basket muzzle if restraint is necessary for extended periods (more than 3 to 5 minutes).

Step 7 : Consider obedience training, a helpful technique for behavior modification. Such training, however, won't eliminate a dog's aggressiveness.