Elk is a Large beast with unaligned alignment and Challenge Rating 1/4 in the 2024 SRD. This stat block includes AC 10, 11 hit points, speeds, traits, and actions.
Ram - Melee Attack Roll: +5, reach 5 ft. Hit: 6 (1d6 + 3) Bludgeoning damage. If the target is a Large or smaller creature and the elk moved 20+ feet straight toward it immediately before the hit, the target takes an extra 3 (1d6) Bludgeoning damage and has the Prone condition.