You know, I keep reading how your landlord doesn't allow dogs but that they don't enforce that rule. I've got a few years under my belt and I've learned a bit about that sort of "arrangement". Mostly that you should NEVER go on assumption when it comes to business. If it's not in writing, do not think you'll win. You won't. What IS in writing is "we don't allow dogs."
The folks above you will get mighty sick of the lil feller barking every time you're in class and they'll call the landlord and then...buh-bye shorty! Don't let it happen. GET IT IN WRITING how "kewl" the landlord is and how he WON'T enforce the 'no dog' rule. You must have an amendment to your lease IN WRITING, stating that you are allowed to have this puppy living in your dorm. You seem like a pretty smart kid. Don't lose sight of it over puppy love.
Outside of that, I think you sound like a great candidate for a pet and I hope whatever you choose to do, suites you to a T! If that includes a little Yorkie, so be it. Good luck with your future, whatever it holds!
