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Huge beast, unaligned
Tail. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 18 (4d6 + 4) bludgeoning damage. If the target is a creature, it must succeed on a DC 14 Strength saving throw or be knocked prone.
Thick armor plating covers the body of the plant-eating ankylosaurus, which defends itself against predators with a knobbed tail that delivers a devastating strike. Some varieties of ankylosaurus have spiked tails that deal piercing damage instead of bludgeoning damage.