What kind of dog is that? Toughest dog I ever saw was a Shar Pei guard dog. They normally have big floppy faces if you keep them indoors, but their snout sets like bone hard leather if you keep them outside. Absolute beast of a dog, looked evil af.
Reminds me of a Mr. Tusk situation from the movie Tusk. There's terror and desperation inside but a fortress of flesh holding it all back.