A woman was wondering if her dog would be able to protect her in the case of an intrusion. To check on the dog’s guarding abilities, she hired two men to break into her home and stage an intrusion. The men were trained in dog behavior so that they would know when to back off and whether or not the dog was an adequate protector.
A masked intruder breaks through the door. The dog barks to tell the intruder to go away. The intruder continues though, and lays his hands on the woman.
The dog ran away but she doesn’t care all that much because she still loves him.
https://www.youtube.com/watch?v=hwFIDZGaIBQ
The dog was terrified and took flight, but it doesn’t make him any less of a great companion.