AC 14 (natural armor)
HP 139 (9d20 + 45; bloodied 69)
Speed 30 ft.
Proficiency +3; Maneuver DC 18
Senses passive Perception 11
Languages —
ACTIONS
Multiattack. The diplodocus makes a stomp attack and a tail attack against two different targets.
Stomp. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 21 (4d6 + 7) bludgeoning damage.
Tail. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: 17 (3d6 + 7) bludgeoning damage. If the target is a Large or smaller creature, it is pushed 10 feet away from the diplodocus and knocked prone .
Legends and Lore
With a History or Nature check, characters can learn the following:
DC 10 Dinosaurs are mighty lizards common in some warm parts of the world.
DC 15 Dinosaurs can be trained, and their eggs are worth a fortune.
The diplodocus is an immense, quadrupedal herbivore with a long neck for browsing the tallest trees and a lashing tail for self-defense. It’s large and strong enough to defend itself from lone predators.
Predator Behavior
1 Chasing herbivores or people
2 Feasting on a kill
3 Hungry; chases and attacks on sight
4 In a cave lair filled with remains of old victims
Herbivore Behavior
1 Grazing; flees or stampedes if approached
2 With an egg or baby; defends it fiercely
3 Charges any who approach
4 Migrating to new grazing lands
5 Stuck in a tar pit or bog
6 Wearing a saddle
1 Half-devoured corpse of a large herbivore dinosaur
2 Huge reptilian footprints
3 Distant thumps, like a giant’s footsteps
4 A distant trumpeting roar
5 A giant mound of excrement
6 Trees snapped by immense force. DC 12 Survival check: Nearby dinosaur tracks
Dinosaurs still exist on remote islands and plateaus and in hot climates.
CR 0–2 Plesiosaurus ; 1 to 3 pteranodons ; 1 or 2 raptors
CR 3–4 Allosaurus ; ankylosaurus ; 3 or 4 raptors
CR 5–10 2 or 3 allosauruses ; diplodocus ; 1 or 2 triceratops ; tyrannosaurus rex
CR 11–15 4 or 5 ankylosauruses ; 2 diplodocuses ; 3 triceratops
Beasts are natural animals whose existence and abilities are nonmagical. A bear and a tyrannosaurus rex are both beasts.