I have a pure bred and a mutt. I really don't think it matters, although I think mutts are underrated. My boys have different personalities. The difference is what I love about them. Jeffrey, (basset/lab) is so full of energy! We rough house a lot together. He's my running partner (I hate running) and he is very smart. Bandit (pug) is my cuddle buddy. Although he gets burst of energy every now and then he just likes to be loved. He is also very stubborn when it comes to obeying (sort of like me) he will sit in my lap all day long if I allow it. I really don't think it matters wheter pure bred of mutt. It's all about personalities and how you and your dog relates.