Thread: Advice wanted

Hiya...I have 3 cats already...a female and 2 males..they are all 1 year old...i got them from the same place and all hve been together since birth.....one is mixed with Maine Coon we think...anyway i really want to get a Maine Coon however my dad has said that the 3 I already have will all start weeing all over to mark territory if I bring in another cat....

All 3 are neutered and go outside to the loo, they never have accidents and I haven't had a litter box for many months since they were a lot smaller...

Does anyone know if this is true what my dad says?

Will it be unfair to bring a Maine Coon into the family?