Do you ever make up stories for your creatures? Like maybe your pet met another pet and now in your head they're married or something and they have two adopted babies... Wouldn't it be nice to have that expressed via a family tree displayed on the pets' profiles? It could be set so that you'd have to purchase wedding rings/proposal gifts in order to get your pets "married" or "mates." And then an adoption certificate item could be used so that one pet can be the mother/sibling/grandparent/etc of another pet, and that would be cool. Since some players want breeding, but breeding is difficult to implement into a pet game... this could possibly serve as a temporary alternate until it's officially decided what to do with the breeding pets idea? Possibly? Feel free to post your feelings/ideas about this if you'd like. ☺
I like your idea but breeding is in projects. I know it will take some time to implement but then it would make no sense to add the option you are talking about to remove it or change it completely someday.