haha that is hysterical, my mom bought Keelyn a pack of these plastic little sea creature things that are meant for babies to squirt water or something, but seeing as though she's my baby, my mom got them for her!
Well she was TERRIFIED of them! not even just didn't want to play with them, but TERRIFIED and wouldn't go near them and would do her little pounce thing haha.
Well anyway, she LOVES them now! There is no explanation for it, haha but i thought that was funny that you said he hated them now loves the tennis balls.
I can relate
. Fickle little furbabies.