two intact dogs of the opposite sex = puppies.
I still think this would all be moot if you could just make ALL breeders, everyone from championship kennels to oops litters to millers and everyone in between responsible for every puppy they produce then people would be far less blase about letting their dogs have oops pups.
What I find sad is that even people who are otherwise responsible and would never let their dogs get knocked up anyway (or let their dog knock up another dog) are pushed into early speutering (even if their dog is from a breeder and not a rescue) because people are SO rabid about it. If someone stands up and says no, I'm waiting/not neutering, they're almost always labelled as bad/crazy/idiots at least by their vet if not the general public (seriously, I'd LOVE to work for a vet that doesn't promote early speutering, BYBs, GLs and crap foods...those are my biggest peeves at work). If someone at the clinic brings up health benefits of leaving their dog intact, doc automatically goes into his testicular cancer and mammary cancer speech. Ugh. And instead of going home and researching it, they take their vet's word for it, because a vet should know best, right? (GAG.)
We don't follow a check list when screening homes, per se, and have made exceptions to about every "rule" there is on our little application.