I feel really stupid, but how do I add my pets to pet wars?

Your pets are automatically added once you add a picture for them. Its not random, everyones pets are added, just takes some time :-)

Um... all mine were just added when I added their photos. Maybe it just takes time?

I was wondering the same thing for a really long time Ali! I'm pretty sure that the zootoo folks just randomly pick people's pets to participate and you have no control.

Go to "my zoo" and you should be able to add each pet along with their photo. I don't know a lot as I just joined yesterday but I did get them all added.