Right? If you don't control your pets (dogs, cats), you don't have a pet, you have a predator and should expect your predator may not make it home at some point due to negligence and disrespect of other peoples' property rights.I can't tell you the number of times I have heard or read a story starting, "We used to have chickens, but our neighbors' dog killed them...
In OP's case, unfortunately, the owners may have an inkling of why their dog(s) don't make it home, which means angry, disrespectful idiots may show up at the front door.