Tennis balls and only tennis balls!!
Eddie had many toys that he has had for years, he was never a dog to play too much with toys, but he would once in awhile. Ever since we brought Rosie home and she started to play with Eddies' toys, now he will NOT play with them. We even went out and bought him new toys just for him but no way will he play with them, I even tried to put a toy in his mouth to play with him.....he just dropped it.
Tennis balls are all he will play with, so he has about 50 of them all over the yard and the house.