Instructions
Choose a dog only if your dog is well socialized. One way to test how your dog will react to another pet is by taking the dog to a local dog park or allowing it to play with a friend or family member's pet dog. Only consider a second dog if your dog is well mannered and plays well with other pets.
Choose a dog that complements the current dog's size and breed. For example, if you already own a Chihuahua, choose a dog that is similar in size and weight. Avoid purchasing a large breed, such as a great Dane, as this dog could injure the much smaller breed.
Avoid choosing an overly aggressive dog, especially if the dog that is currently in the home is submissive. This could cause the current dog to be bullied and pushed around, which could lead to discord in the home.
Consider a dog that is the opposite sex of the one that is already in the home. If you do not wish to have a dog of the opposite sex of the one that is currently in the household, make sure that the dog you already own is spayed or neutered, which will cut down on any aggressive tendencies.
Choose a puppy or dog that is close to the current dog's age, especially if that dog is more advanced in years. An older dog may not have the patience it requires to accept all of the foibles of a new puppy.
Teach the current dog a few simple commands before the new dog is introduced, such as sit, stay and come. This will help keep the current dog more calm and easier to control when the new addition arrives.
How to Choose a Second Dog
Many dog lovers feel that their household is not complete without the addition of a second, third or even fifth dog. A second dog may help keep an existing pet from being lonely and bored, which can lead to destructive behavior. A second dog could also lead to a potential disaster, causing discord in an already happy household. There are several factors to consider before introducing a second pooch to any family.