Nodosaurus (5e Creature)
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Large beast (thyreophore), unaligned
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
Shoulder Spike. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage.
Tail. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage DC 13 Strength save or be knocked prone. If the target is knocked prone, the nodosaurus can move up to half its speed without provoking opportunity attacks.
A small plated herbivore, the nodosaurus is adapted like a large armadillo. These dinos prefer to run away after gouging the enemy with its shoulder spike and sweeping its legs. However, when outmatched, these guys have an ace up their sleeve. The Nodosaurus will lie down on the ground, which means that a predator has to get past the defenses of the creature in order to find any flesh. And unless you have the crushing power of a tyrannosaur, that is not likely to happen.