Hi,I have been looking into getting rescue rats, but my housemate is not too fond of the idea and he have tried to convince me to get another kind of rodent, but I really believe rats could be wonderful pets. He works with lab rats and mice a couple of times a month and he seems to have a very strong opinion about them. His arguments for not getting rats in our household is that he has experienced rats as very smelly and nasty biters when they bite, yet of course very intelligent. At work they change their cages every 3-5 days and they keep 3-4 rats per cage. I plan on not getting more than three rats and they are going to live in a huge cage: 3x3x6,5 feet, so I don't believe they are going to be that stinky in a big cage, but I would love to hear you thoughts about rats smelliness. Also how often would I have to change a cage of this size? As far as the biting goes I always say: everything that has teeth have the possibility of biting, and I might get bitten with rescue rats, but I honestly don't believe it's as bad or as frequent as my housemate says (he has been bitten quite a few times, but it has always been fear biting from lab rats). They might be able to give nasty bites, but so are a lot of other pets.It's important to note that my housemate is not going to participate in caring for the rats (unless he wants to of course) and they are going to be in my room, so he don't have to see them very often. Have you ever been in a similar situation?