Bulls and cows are built different so that is a good way to judge sign. Bulls have small hips and big chest which will change the prints they leave. Elk always step their back hooves into the front print. So bulls will step to the inside of the front foot and cows will step to the outside of the front foot. Another sign is droppings bulls look like acorns with one end being blunt. Where cows are rounded on both ends. If following watch to see if the animal goes around trees or just under low branches. Bulls around and cows under the low branches.