This morning I gave Max a greenie. He laid it down took a short nap picked it up and ran around making a squeaking noise. We thought he had to go out so we took away the greenie to go out. He sat down and wouldn't budge. We gave up the potty idea,gave him the greenie and he ran around squeaking got on one of his beds and hid it betweeen the bed and the door. What' with the squeaking?