Well?
Do any of you know what an ABM is? No I didn't say IBM! I said ABM! They come in many models and some are so large folks are frightened of them. Some are so small you can't see them in tall Grass( Clue).
Now the interesting thing is, the smaller the model, the louder, more irritating and aggravating is the sound when the ABM goes off! Especially if the shadow they react to has absolutely nothing to do with them.
The other problem is they do NOT come with an off switch! Oh, some are voice activated but the smaller models don't react to verbal input( They ignore it.). My point here is to make you smile. Pet your Dog and be glad you have that friend no matter where they came from.