Just a quick note....... As everyone has adequately covered microchips are NOT tracking devices, however at the Tufts Animal Expo this year I DID speak to a rep from one of the chip companies (I think Avid though I can't be 100% sure) and he said "lojack" type technology is indeed coming and in the near future. It's something that they're working on now, evidently with some degree of success. Dawn [Posted in FML issue 4070]