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Bark collars are specially designed to discourage a dog's excessive or inappropriate barking. Since they rely on negative reinforcement, they should only be used under certain circumstances. A dog bark collar doesn't address the underlying cause of the barking, so it should be used with other training methods to insure the behavior change is permanent.

If you watch television, you've probably seen celebrities like Paris Hilton toting around tiny dogs with big poppy brown eyes. These dogs, called Chihuahuas, are one of the smallest dog breeds in the world. The Chihuahua first appeared in Mexico and does well in warmer climates.

Bull Terrier is a good dog that has developed a bad reputation. This dog was created to fight and when a Bull Terrier is mistreated, it can be made into a dog that is quite aggressive, even vicious. With proper care and training, a Bull Terrier puppy can grow up to be a sweet and loving dog. In fact, at times this breed is even slightly silly. However, an older dog who has been mistreated may never be truly trustworthy and should not be placed in a home where it has access to children.