Summary: Saint Bernard/GSD mix dog (not quite 2 years old) will bang on the picture window when there is excitement going on outside (birds, rabbits, mailman, etc). Yes, he gets behavior training when I am home. I am concerned he will knock out the window when I am not home (he has already plowed through the neighbors fence chasing something). I blocked it off so he can't get to the window, but my living room is really small so this takes up room. All of my rooms have windows so keeping him locked in a another room isn't a solution and it isn't fair to him. Leaving him outside all the time isn't a solution either as we have a problem with dogs being stolen for the rampant dog fighting games.
Question: I would like to secure a piece of polycarbonate sheet to the inside of the window so he can't pound on the window itself. What is the correct thickness to prevent him from bending the polycarbonate to get to the window? Is there a better way to secure the window?
Any help is appreciated