All the comings and goings of pets in our household this year has given me an idea. I think it would be interesting to create a pet exchange for people who are tired of their current one and would like to try something different. Obviously many animals become stressed when their environment changes too much, so you don't want one poor cat going to a different family every week. But if you have a giant tortoise, for example, chances are it's going to outlive you anyway, so maybe switching it up every few years would be nice. And it gives you an additional threat when you buy the puppy and tell your kids they better feed it or you're getting rid of it.