Elk is a Large beast with unaligned alignment and Challenge Rating 1/4 in the 2014 SRD. This stat block includes AC 10, 13 hit points, speeds, traits, and actions.
Ram - Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage.
Hooves - Melee Weapon Attack: +5 to hit, reach 5 ft., one prone creature. Hit: 8 (2d4 + 3) bludgeoning damage.