How to Determine Compatibility of A Second Dog

Welcome to the world of picking out a second dog! While it might sound like an easy task—after all, dogs are some of the friendliest animals on Earth—the truth is that you need to put some time into selecting a dog that will fit well into your life and your family. Here’s what you need to think about when choosing your next pup (and no, we’re not just talking about looks!).

Make a deliberate choice in picking a second dog.

You should never just pick up a dog just because you think it would be cool. If you are new to having dogs in your home, consider adopting from a local shelter or rescue organization. This can help ensure that the dog will fit into your life and family.

When considering adding a second canine companion, ask yourself these questions:

  • Am I ready for another dog? Do we have enough time, patience and money to care for two pets?
  • Do my family members want another pet? Dogs are not disposable toys—they’re living beings who require care 24/7. If there’s one thing that gets under my skin about people with multiple dogs is when they don’t give their furry friends attention or exercise! The same goes for cats too (yes kittens count as pets too). When buying toys and food make sure everyone agrees on which brand/kind so no one feels left out or taken advantage of later on down the line.”


When getting a second dog, it’s important to consider both their personalities. This is because dogs that are very similar in personality don’t play well together. Two dogs who are alike will probably fight over toys and food, and they may have trouble getting along when it comes time for walks or trips in the car.

So how do you determine whether two dogs will get along? You can start by observing them together (if possible). If you don’t have access to them at the same time, ask about their personalities from their previous owners or breeders. Another option is talking with your veterinarian; they often know a lot about the personalities of animals that come through their clinic!

One thing to keep in mind: even though there are some similarities between breeds, every dog has its own unique qualities that shouldn’t be ignored just because they’re “supposed” to act a certain way based on what type of canine companion you’ve chosen for yourself!


Size is important when deciding whether or not a second dog will be a good fit. If you have a small dog, it may be best for them to stay small. Smaller dogs are easier to manage and train, but they also can be more vulnerable and therefore less compatible with larger dogs. This means that if you have a large dog, such as a Great Dane or Mastiff, you need to consider whether that breed would be better matched with another large breed or one of medium proportions (such as an Irish Wolfhound).

Smaller dogs like chihuahuas often aren’t able to defend themselves against other canines who are larger than them; they’re at serious risk of being injured by the larger canine’s teeth or paws. If your first dog is small and your second dog is large enough to hurt him/her during playtime or training sessions (or vice versa), this could cause problems in both their relationships with each other and yours—which could lead down unfortunate paths such as separation anxiety!

Energy level

The energy level of your first dog is a big factor in determining whether or not a second dog will work out. If you have an energetic pup or if your household is active, then that might be all the motivation needed to bring another canine into your home! But if you have an easygoing pup, or if you’re generally unenthusiastic about exercise yourself, then a second dog may not be appropriate for your situation.

If your first dog already has an established routine and schedule (such as feeding times), it can be difficult to accommodate another one who has different needs. And even if both dogs are well-behaved enough to get along when they’re together, their different personalities may still clash. So before adding any additional furries to the family unit, weigh all the pros and cons carefully before making a decision!

Breed and Health

Certain breeds are more prone to certain health problems, like hip dysplasia or cataracts.

You also want to consider how the dog you’re considering interacts with other dogs. If a breed is aggressive toward other dogs, it may be difficult for them to get along with your existing pets.

Some breeds are also known for being less patient around children; others are not at all suited for households with small children. And if you have cats in your home, you’ll want to make sure any future companion won’t attempt an attack on their feline friends!


Adding a second dog to your household can be a wonderful, enriching experience that brings double the joy. However, it’s important to make sure you’re bringing home a canine companion who will fit in with your family and lifestyle. Remember that all dogs are individuals, so finding out as much as you can about their background is the best way to start.