My landlord told me they just wanted to be told if I added any pets so as not to catch them off guard. I have a backup place I could move to but would rather not. My lease here is up for renewal in october so if I want to move then I'd have to then.
ETA: We're currently in a rental in the middle of a city that allows our dogs and we are shortly moving to TN and found a rental there that allows all of our dogs as well, with a huge (almost an acre!) fenced yard. I think you can do it