Report When does the chewing stop? in General Border Collie Discussion Posted October 21, 2014 He chews things I around the house. When I'm out of the house it's definitely a stress-coping behavior. There are instances that I can generally leave him out of sight in the house though (i.e. when I take a shower) and 99% of the time he just lays down and waits for me but sometimes he also chews things in those instances. I've caught him in the act before too and he gets really startled without me even acknowledging him. This surprises me because I never gave him any adverse reaction as a small pup that would make him think he had to hide and chew things away from me. I generally just stuck a toy in his mouth.