They sure look twice the size when they are coming at you! I had one come alive in my trunk as a kid. Caught it in a trap and gave it the usual whack to the head with a large wrench, several in fact. The blood was coming out the ears, mouth , and nose. I figured it for dead but when I got to the fur buyer's place later that morning and opened the trunk, had a pissed off beaver on my hands! The one in the video was big, maybe 50 pounds wet, not sure they get 80 pounds, if they do thats about it.