Dinosaurs

Dinosaurs, or behemoths, are among the oldest reptiles in the world. Predatory dinosaurs are savage, territorial hunters. Herbivorous dinosaurs are less aggressive, but they might attack to defend their young, or if startled or harassed. Dinosaurs come in many sizes and shapes. Larger varieties often have drab coloration, while smaller dinosaurs have colorful markings akin to birds. Dinosaurs roam rugged and isolated areas that humanoids seldom visit, including remote mountain valleys, inaccessible plateaus, tropical islands, and deep fens.

Allosaurus

The Allosaurus is a predator possessing great size, strength, and speed. It can run down almost any prey over open ground, pouncing to pull creatures down with its wicked claws.

---

Armor Class	13 (natural armor)
Hit Points	6d10+18
Speed	60ft.
Strength	19 (+4)
Dexterity	13 (+1)
Constitution	17 (+3)
Intelligence	2 (- 4)
Wisdom	12 (+1)
Charisma	5 (-3)
Skills	Perception d20+5
Senses	Passive Perception 15
Languages	---
Challenge	2 (450 XP)
Special 1	Pounce	If the Allosaurus moves at least 30 feet straight toward a creature	and then hits it with a claw attack on the same turn,
that target must succeed on a	DC 13 Strength saving throw or be knocked prone.	If the target is prone, the Allosaurus	can make one bite attack against it as a bonus action
Action 1	Bite	Melee Weapon Attack	d20+6 to hit
Reach 5 ft., one target	Hit 2d10+4 piercing damage
Action 2	Claw	Melee Weapon Attack	d20+6 to hit
Reach 5 ft., one target	Hit 1d8+4 slashing damage

Ankylosaurs

Thick armor plating covers the body of the plant-eating ankylosaurs, which defends itself against predators with a knobbed tail that delivers a devastating strike. Some varieties of ankylosaurs have spiked tails that deal piercing damage instead of bludgeoning damage.

---

Armor Class	15 (natural armor)
Hit Points	8d12+16
Speed	30ft.
Strength	19 (+4)
Dexterity	11 (+0)
Constitution	15 (+2)
Intelligence	2 (- 4)
Wisdom	12 (+1)
Charisma	5 (-3)
Senses	Passive Perception 11
Languages	---
Challenge	3 (700 XP)
Action	Tail	Melee Weapon Attack	d20+7 to hit
Reach 10 ft., one target	Hit 4d6+4 bludgeoning damage.	If the target is a creature, it must succeed on	a DC 14 Strength saving throw or be knocked prone

Plesiosaurus

A plesiosaurus is a marine dinosaur whose compact body is driven by powerful flippers. Predatory and aggressive, it attacks any creature it encounters. Its flexible neck accounts for a third of its total length, letting it twist in any direction to deliver a powerful bite.

---

Armor Class	13 (natural armor)
Hit Points	8d10+24
Speed	20ft.	Swim 40ft.
Strength	18 (+4)
Dexterity	15 (+2)
Constitution	16 (+3)
Intelligence	2 (-4)
Wisdom	12 (+1)
Charisma	5 (-3)
Skills	Perception d20+3	Stealth d20+4
Senses	Passive Perception 13
Languages	---
Challenge	2 (450 XP)
Special	Hold Breath	The plesiosaurus can hold its breath for 1 hour
Action	Bite	Melee Weapon Attack	d20+6 to hit
Reach 10 ft., one target	Hit 3d6+4 piercing damage

Pteranodon

These flying reptiles have wingspans of 15 to 20 feet and typically dive for small marine prey, though they are opportunists and will attack any creature that appears edible. A Pteranodon has no teeth, instead using its sharp beak to stab prey too large to swallow with one gulp.

---

Armor Class	13 (natural armor)
Hit Points	3d8
Speed	10ft.	Fly 60ft.
Strength	12 (+1)
Dexterity	15 (+2)
Constitution	10 (+0)
Intelligence	2 (- 4)
Wisdom	9 (-1)
Charisma	5 (-3)
Skills	Perception d20+1
Senses	Passive Perception 11
Languages	---
Challenge	1/4 (50 XP)
Special	Flyby	The Pteranodon doesn't provoke an opportunity attack	when it flies out of an enemy's reach
Action	Bite	Melee Weapon Attack	d20+3 to hit
Reach 5 ft., one target	Hit 2d4+1 piercing damage

Triceratops

One of the most aggressive of the herbivorous dinosaurs, a triceratops has a skull that flares out to form a protective plate of bone. With its great horns and formidable speed, a triceratops gores and tramples would-be predators to death.

---

Armor Class	13 (natural armor)
Hit Points	10d12+30
Speed	50 ft.
Strength	22 (+6)
Dexterity	9 (- 1)
Constitution	17 (+3)
Intelligence	2 (- 4)
Wisdom	11 (+0)
Charisma	5 (-3)
Senses	Passive Perception 10
Languages	---
Challenge	5 (1 ,800 XP)
Special	Trampling Charge	If the triceratops moves at least 20 feet straight toward	a creature and then hits it with a gore attack
on the same turn, that target must succeed on a	DC 13 Strength saving throw or be knocked prone.	If the target is prone,	the triceratops can make one stomp attack against it as a bonus action.
Action 1	Gore	Melee Weapon Attack	d20+9 to hit
Reach 5 ft., one target	Hit 4d8+6 piercing damage
Action 2	Stomp	Melee Weapon Attack	d20+9 to hit
Reach 5 ft., o, one prone creature	Hit 3d10+6 bludgeoning damage

Tyrannosaurus Rex

This enormous predator terrorizes all other creatures in its territory. Despite its size and weight, a tyrannosaurus is a swift runner. It chases anything it thinks it can eat, and there are few creatures it won't try to devour whole. While prowling for substantial prey, a tyrannosaurus subsists on carrion, and on any smaller creatures that try to dart in to steal its meal.

---

Armor Class	13 (natural armor)
Hit Points	13d12+52
Speed	50 ft.
Strength	25 (+7)
Dexterity	10 (+0)
Constitution	19 (+4)
Intelligence	2 (-4)
Wisdom	12 (+1)
Charisma	9 (-1)
Skills	Perception d20+4
Senses	Passive Perception 14
Languages	---
Challenge	8 (3 ,900 XP)
Action 1	Multiattack	The tyrannosaurus makes two attacks:	one with its bite and one with its tail.
It can't make both attacks against the same target
Action 2	Bite	Melee Weapon Attack	d20+10 to hit
Reach 10ft., one target	Hit 4d12+7 piercing damage.	If the target is a Medium or smaller creature,	it is grappled (escape DC 17).
Until this grapple ends, the target is restrained,	and the tyrannosaurus can't bite another target
Action 3	Tail	Melee Weapon Attack	d20+10 to hit
Reach 10ft., one target	Hit 3d8+7 bludgeoning damage