Now you've got some idiot neighbor leaving notes like that. WTF ? You could buy a stuffed dog that looks like yours, then "plant" it on the neighbors lawn, then hide in your house, & wait for the gunshot. Then call the police !!!
That will make the TV news for sure.
I bought one of those life-like stuffed Rottweiler's and brought it home. My dog at the time (German Shepard/Siberian Husky) barked and growled at it when she first saw it. Meanwhile, my male cat calmly walked up to it and sprayed it with urine. I cleaned off the cat pee and to this day that Rottweiler guards my office at work far away from spiteful cats (who I now miss dearly).
