I like all dogs, but I wouldn't like to own all dogs. Chihuahuas just don't do it for me, same with any of the miniature breeds out there. I like my dogs to be at least 20-25 lbs. at the lightest. We had a poodle-mix when I was growing up (Rags) and he was about as small as I'd go. Here's a picture of him when he was 4-5 years old.



Other than that, I don't think I'd like to go exceedingly big either. My husband and I aren't very big people and I always get nervous walking huge dogs because they could take off at a squirrel and I'd be helpless.

So... nothing under 20-25 lbs. and nothing over 75-80 lbs.

*Note - If there was a pup in need, that's a different situation. I'm just saying I wouldn't seek out those under/over the weight limits above.