Having an adoptable available only once?

[tahbikat]

Basically I want users to be able to adopt a certain critter when they join the site only once and never again. I actually do know this is enabled already with the adoptable conditions section "You want user to have no more than THIS many types of this adopt".

However, if they trade it away, say, to a friend or something, they can adopt another and then just get their old one back, which is what I don't want to happen. :c I'm sure some users will eventually figure this out and the value of this adopt will go down (not to mention it will be highly frowned upon by me).

Anyone have solutions? I could live with I guess if I have to.

I guess in the meantime I'll make them a non tradeable species even though I wanted them to be able to get traded. :L