I have 5 dogs and 5 cats and they all get along just fine. Granted they are small dogs. Nova, my dachshund mix was the only one who wanted to give the cats a hard time when I got her. I kept her crated when I wasn't home so she couldn't harm the cats. She now does great with them. It took some time, but she learned to not chase or bother them. I no longer crate her when I'm not home, but I do use a baby gate to confine her to the Kitchen. She has free run of the house when I'm home, but not when I'm away.