How can I switch pets in iFluff(friend) in my iPod Touch Series 2?

I had 2 pets, a panda and a poley bear, and I don't know how to "switch" so I made a new panda. Help?How can I switch pets in iFluff(friend) in my iPod Touch Series 2?You never had 2 pets. When you select edit, new fluff, the new pet replaces the old one. It has the same fph (racing speed) as the old one and I think the same mood level (don't know how to find out what that is...) you just have to edit new fluff ever time you want to change.