Raising two dogs vs one dog. Should you raise one dog or two dogs? That’s a question I asked myself for years -- until I decided to try owning multiple dogs (usually 2, but sometimes 3) at the same time. Because multi-dog household aggression is real! It’s one of the signs of Littermate Syndrome when you’re raising two puppies. I’ve been at this for decades now! Here’s how to introduce 2 dogs. Signs one dog doesn't like the other. Pros & Cons of having more than one dog. Ways to simplify life when you have multiple dogs. How to get dogs to get along. All my best tips for how to raise two dogs in the house together!