I was waiting around near Wyatt's house in the Junkyard (the actual junkyard portion of the Junkyard) and I left his house door open but left the gate closed... then while I was closer to the mutants I heard a dog yelp as if it had died and I knew immediately what had happened.
Both dogs died on one of his mines!
This wasn't even a distant mine, this one was literally like 10 feet outside of the door in plain sight.
[Yes, I am aware this isn't necessarily a bug, but it was so notable I had to make some kind of mention of it- and it is weird that they wouldn't know to avoid his mines]