Well so glad to hear from all of you,,,,I know terriers are very very smart, and have had them for years....this is just the littliest one I've ever dealt with,,but being a full time RV'r she is perfect for our moveable home......Thanks again for your replys....guess it is just a natural instinct of theirs...even though my Cairne terrier wouldn't fetch if his life depended on it......LOL