^ last two posts probably the best advice
I've had dogs since before I could walk, just got one now that I'm a few years out of college and in the work force and holy fuck they are a lot of work - it's nearly equivalent to having a kid.
Puppy would be even worse because they NEED constant attention and training. I second the idea of getting a dog from a shelter, there are tons of good programs. Look at some of the dogs at luckylabrescue.com - that's where I got my girl and she is amazing
Simply put dogs just don't fit into the college lifestyle, so don't make a stupid choice and ruin a dogs life