Answer:
A mature bull can weigh anywhere from under 2000 lbs to over 3300 lbs. The current average is around 2700 lbs. But, it all depends on each individual bull, and his breeding.
Mature bulls can weigh up to 2000-2800 lbs for the more "average" type breeds including Angus, Holstein, Brahman, Galloways, Charolais, and many others. Chianinas can weigh over 3000 lbs (heaviest recorded over 3800 lbs), and mini-breed bulls and Dexter bulls can reach 1000 to 1400 lbs.