|Description: The Bull Shark is a thick, round or barrel bodied shark with a short, broad and blunt snout. It has small eyes and triangular saw-edged upper teeth, lacks an interdorsal ridge. The 1st dorsal fin is broad and triangular and has a 2nd smaller dorsal fin. The body is gray on top and white below. The fins have dark tips, especially in young. Bull sharks can survive in both fresh and salt water environs. The Bull Shark is a very aggressive fish, one of the most common to bite humans. Bull sharks have more testosterone than all fish.