I looked through the forum, but I can't seem to find the answer to my question. I've had four pets, that all lived to age 74. I have taken good care of them, keeping their food bowl full, giving them meds as soon as I see them sick, and keeping their area clean. But none of them have decided to come back. Also none of mine live past 74, am I doing something wrong or is it very rare to have them do either?