There are lots of breeds I would never consider having. It would be much easier for me to name the breeds of dogs I would consider bringing into my life -- and easier to name the general characteristics that I wouldn't want the said breed to have. I'll list some of those:

I wouldn't want a breed that is overly ball/stick driven (The thud of a ball in my lap every five seconds would drive me insane). I wouldn't want a dog that loves absolutely everyone (I would rather have a good guard dog that gets along with people he knows or meets outside his territory). I wouldn't want a small breed or a giant breed (Small dogs are too fragile for me - I like a big dog that I can squeeze and roughhouse with, and I LOVE giant breeds but they don't live very long and don't suit dog sports very well). I would rather have a breed that is known for it's tolerance towards children (I have many younger cousins and a younger brother). And I would also like a breed known to be alright with small animals and cats. Even though I LOVE brushing a nice thick coat, I plan on being a groomer, and at the end of the day I won't want to come home after a hard day's work and groom another dog, so I'd rather the dog not have hair that needs to be brushed everyday. I would like a breed that is known for it's versatility, because I plan to do alot with my dog. And I wouldn't want to dog to be too lazy -- kind of the perfect mix -- lazy or energetic when needed. I definatly want a dog that needs lots of exersise, but can sleep beside me at the end of the day without a murmer. Edit: I forgot to add athleticism. I plan to do lots of dog sports, and I want a dog that loves is fast and loves to run and jump.

I feel that everyone should make a list of the qualities they do or do not want when they are choosing a breed. The catahoula fits my list perfectly!