I can't use cat collars on Fido they are too small for him

he's a big yorkie.
He has never got stuck somewhere with his collar, also he's always just in my room very little in other places in the house cause he barks all the time if he's outside my room, there are no places he can get his collar over and attached too, also inside I most often have the collar so loose that he can take it off if he would get stuck somewhere
He doesnt run free or anything often and I always go outside with him in a leash, he can't get stuck anywhere with the collar so I don't think we need breakaway collars?