I've been playing a lot of Dueling Diego lately, but still I have yet to get any pets from the game, but I've gotten a couple mega snack packs. Turns out after you beat Roberto you go back to the beginning. The best score I've ever got is around 20,000. What was that number? Oh yea.
Man it took a while to figure out how to defeat Roberto. I used to not even be able to get to level three, but now I can beat the game over and over again.
I'll keep trying for a pet, so here I go.