cats living together

Question
I have a ten year old cat, and my sister has a four year old cat. If these cats were to live together, would they fight?

Answer
Yes, but you can help them live together a lot better usually by using baby powder that is safe for the cat. If they smell the same they will think their family. But you must use the baby powder sometimes for weeks before getting rite of all the smell and fight. I recommend asking your vet more about this trick. It's not recommended for all cats. And keeping cats apart at the time is usually a good idea. Slowly move them together. Watch them when they are near eachother. Some cats won't fight yet best rule of thumb is to think of that happening. So talk to your vet about those things. Good luck and sorry