my current rat, Luther, needs a buddy. I'm not sure how to introduce a male to him. Ive only had Luther for 2 weeks and 2 days, and he's not full grown yet. I have an extremely limited budget at the moment, and my parents wont pay for anything to do with the rats except bedding, food, etc. I only have 11$ for stuff until christmas. I cant get another cage to introduce them, so is there another way without paying for stuff?