Darren Younkin answered 6/7/2011 How Much Should A 5 Month Old Pitbull Weigh? I HAVE A BLUE RAZORS EDGE FEMALE SHE JUST TURNED 6 month and she is 50lbs..Funny cause I owned a RED NOSE FEMALE AND AT 3 years she was only 65lbs..Really excited to see how well my BLUE PIT PROGRESSES...