when im holding checker if it touch him with the other hand to stoke him or somthin he jumps up like hes startled but if i do it quickly (fast little taps) he will jummp quick and fast....by jump i mean well he shakes inside...gets hard then turns back to normal feeling ...at first i thought it was cuz he wasnt used to me but its been a year and he still does it...its not noticable much to the untrained eye, u have to feel it to understand...anyone else have this experience?im clueless