YES - it IS an obsession and NO it will never stop LOL!! Our sweet Gypsy Rose doesn't have a small tennis ball either (thank your lucky stars!) .. she likes a football size.. we buy loads of them - need to buy in bulk..! She knows they keep in a cupboard under the stairs .. we get a ball out but after a while she goes back to the cupboard after she loses interest in the original one, we have a few so we have a "turnover" .... !! We moaned that our previous dogs had no interest in playing ball.. LOL !! Ana xx