I know this would vary from locale to locale, but, presumably, there are some animals that do not require a permit to kill (mice in mouse traps, for example). How does this work? Is there a list of “always OK to kill” species?
Edit: Thank you everybody for the replies!
Depends where you live. Wild animals, we called local animal control about a opossum we’d caught in a cat trap (trying to catch a local stray cat) wanting to know what they wanted us to do with it. and they let us know about the felony we were about to admit to committing and did we want to shut the fuck up. Apparently we needed a license to trap wild animals. So telling your local animal control after the fact isn’t in your best interests, but they could provide guidance before the fact. If you’re in Washington State, you leave those (just put on the local endangered list) western gray squirrels the fuck alone.
You just gotta add a sign that says “Warning: trapping wild animals without a license is illegal. This trap is for feral cats only. Any wild animals found in this trap will be shot on sight.”