Imagine how bored you would be if you have nothing to do, nowhere to go, every day, for the rest of your life. It isn t fun. It's not fun particularly for pets who love to run around, play around, and have fun. Before adopting a dog, there are plenty of things you should think about. These ensure that your dog's life with you is a pleasurable experience. The results of positive reinforcement are more permanent and lessen aggressive behavior. For both people and animals, chemicals are released in the brain creating pleasant associations when positive reinforcement is used. Basically, positive reinforcement is rewarding a dog whether by food, by a hug and embrace, and by play. Excessive barking, jumping on people, quarrelling with other dogs and house pets, chewing on furniture, scratching the carpet are just some of the examples untrained dogs do that often results to embarrassment to their owners. Different dogs have a variety of temperaments. These do not only differ from one dog to another, it also differs depending on the breed and the size of the dog. Before adopting a dog for a companionship, it would be well to do a little research regarding health, ailments, and other breed specific issues on health. Companion dogs being generally small dogs are energetic and rambunctious. While they are not ideal around children because they move very fast, they are good company to older people who could use extra cheer around the house. Setting limits on what the dog can and cannot do is within the dog's nature. In fact, dogs enjoy hierarchy; it wants to know who the boss is. It is its tendency that is natural to dogs. Dogs trained in obedience are not only much more enjoyable as companions; dogs also are less likely to suffer and are loved more when it knows its limits. Typically though, dogs of the same breed share more of the same characteristics. When decided in adopting a dog, choose dog characteristics and traits that you want. If you lead an active lifestyle for example, do not adopt a dog with a phlegmatic character that will be content to hang around the house much of the time, eating, and sleeping.