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  • Writer's picturetroodon135

Prehistoric Bestiary Part I: Dinosaurs Expanded

I always felt that the dinosaur selection in 5e was too limited, so here's a few more to help with that. In addition, I've updated the Brontosaurus to better fit the unique attributes of the apatosaurines instead of the more "generic sauropod" of the official stat block.

 

Brontosaurus

Perhaps the most iconic of all herbivorous dinosaurs, brontosaurus have thick, muscular necks which they use as bludgeons in combat. They are often called “thunder lizards”, either for the rumbling sound of their footsteps or the thunderous crack of their whiplike tails.

Brontosaurus

Gargantuan beast, unaligned

Armor Class 15 (natural armor)

Hit Points 121 (9d20+27)

Speed 30 ft.

STR DEX CON INT WIS CHA

21 (+5) 9 (-1) 17 (+3) 2 (-4) 10 (+0) 7 (-2)

Saving Throws Con+6

Senses passive Perception 10

Languages

Challenge 7

 

Actions

Multiattack. The brontosaurus makes a stomp attack and either a slam or a tail attack.

Slam. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 27 (4d10+5) bludgeoning damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.

Stomp. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 27 (5d8+5) bludgeoning damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.

Tail. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 19 (3d8+5) slashing damage and 9 (2d8) thunder damage. The target must make a DC 14 Constitution saving throw or be deafened.


Carnotaurus

Among the strangest carnivorous dinosaurs, Carnotaurus have long necks, small, horned heads, and long, muscular legs. These dinosaurs prefer human-sized prey, which they swallow whole. Though they are incredibly fast, they are poor at turning, and as such prefer to hunt in wide open areas with few obstacles.


Carnotaurus

Huge beast, unaligned

Armor Class 13 (natural armor)

Hit Points 51 (7d12+6)

Speed 15 ft.

STR DEX CON INT WIS CHA

17 (+3) 9 (-1) 15 (+2) 2 (-4) 10 (+0) 7 (-2)

Skills Perception +2

Senses passive Perception 12

Languages

Challenge 3


Sprinter. If the Carnotaurus moves in a straight line, its speed is 80 ft.

 

Actions

Bite. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 16 (3d8+3) piercing damage. If the target is Medium or smaller, it is grappled (escape DC 13). Until this grapple ends, the target is restrained and the carnotaurus cannot bite another target.

Swallow. The carnotaurus makes a bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is swallowed and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the carnotaurus, and it takes 14 (4d6) acid damage at the start of each of the carnotaurus’s turns. A carnotaurus can have only one creature swallowed at a time.

If the carnotaurus takes 15 damage or more on a single turn from the swallowed creature, the carnotaurus must succeed on a DC 12 Constitution saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 10 feet of the carnotaurus. If the carnotaurus dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 10 feet of movement, exiting prone.


Diplodocus

While less robust than many other long-necked herbivorous dinosaurs, diplodocus are perhaps the longest of them all. The largest diplodocus can reach over 110 feet in length, though most are closer to 90 feet. Their whiplike tails are covered in tiny spines, making them adept at slashing through flesh.


Diplodocus

Gargantuan beast, unaligned

Armor Class 15 (natural armor)

Hit Points 116 (8d20+32)

Speed 30 ft., type 30 ft.

STR DEX CON INT WIS CHA

20 (+5) 9 (-1) 19 (+4) 2 (+0) 11 (+0) 7 (+0)

Saving Throws Con +7

Senses passive Perception 10

Languages

Challenge 5

 

Actions

Multiattack. The diplodocus makes two tail attacks against separate targets.

Stomp. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 27 (5d8+5) bludgeoning damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.

Tail. Melee Weapon Attack: +8 to hit, reach 30 ft., one target. Hit: 38 (6d10+5) slashing damage.


Dryosaurus

These relatively small plant-eating dinosaurs forage in herds of up to a dozen, with members taking turns as lookouts in case of danger. While their first response to a threat is to flee, when cornered they can defend themselves with powerful kicks. A dryosaurus can be trained as a mount for a small sized creature.


Dryosaurus

Medium beast, unaligned

Armor Class 13 (natural armor)

Hit Points 16 (3d8+3)

Speed 60 ft.

STR DEX CON INT WIS CHA

13 (+1) 15 (+2) 12 (+2) 2 (-4) 12 (+1) 6 (-2)

Saving Throws Dex +4

Skills Athletics +4, Perception +3

Senses passive Perception 13

Languages

Challenge 1/4

 

Actions

Kick. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d6+1) bludgeoning damage.


Gallimimus

These birdlike dinosaurs are prized as mounts due to their exceptional speed, but they are difficult to ride. Without a specialized saddle, a character has disadvantage on checks to remain mounted on a gallimimus.


Gallimimus

Large beast, unaligned

Armor Class 13 (natural armor)

Hit Points 26 (4d10+4)

Speed 80 ft.

STR DEX CON INT WIS CHA

14 (+2) 15 (+2) 13 (+1) 2 (-4) 12 (+1) 7 (-2)

Skills Perception +3

Senses passive Perception 13

Languages

Challenge 1/2

 

Actions

Talon. Melee Weapon Attack: +4 to hit, reach 10 ft., one target. Hit: 11 (2d8+2) slashing damage.


Lambeosaurus

A larger relative to the Hadrosaurus, a Lambeosaurus has a colorful, hatchet-shaped crest on its head. This crest is hollow and allows it to produce haunting, musical calls which help herds communicate with one another. Lambeosaurus are difficult to train as mounts, due to their size and power.


Lambeosaurus

Huge beast, unaligned

Armor Class 13 (natural armor)

Hit Points 51 (6d12+12)

Speed 35 ft.

STR DEX CON INT WIS CHA

16 (+3) 9 (-1) 15 (+2) 3 (-4) 12 (+1) 13 (+1)

Skills Perception +3, Performance +3

Senses passive Perception 13

Languages

Challenge 2

 

Actions

Hooves. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 14 (2d10+3) bludgeoning damage.

Rallying Cry. The lambeosaurus calls out to its herd with a musical bellow. It makes a DC 12 Performance check. On a success, all other lambeosaurus within 30 ft. add 1d4 to their next attack roll.


Spinosaurus

Among the largest carnivorous dinosaurs, Spinosaurus are semi-aquatic ambush predators which primarily feed on marine reptiles and giant primeval fish, but are known to supplement their diets with land-based prey which they snatch from the water’s edge. Though their jaws are weaker than most giant meat-eating dinosaurs, they make up for it with enormous hooked claws on their hands.


Spinosaurus

Huge beast, unaligned

Armor Class 13 (natural armor)

Hit Points 114 (12d12+36)

Speed 20 ft., swim 50 ft.

STR DEX CON INT WIS CHA

22 (+6) 10 (+0) 17 (+3) 2 (-4) 12 (+1) 8 (-1)

Skills Perception +4, Stealth +3

Senses passive Perception 14

Languages

Challenge 7

 

Actions

Multiattack. The spinosaurus makes three attacks, one with its bite and two with its claws.

Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 15 (2d8+6) slashing damage.

Claw. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 19 (2d12+6) slashing damage.


Stenonychosaurus

These small, inquisitive dinosaurs are among the most intelligent dinosaurs, and this intelligence often makes them pests to humanoid communities, as the crafty animals devise intricate methods to steal food and small livestock. Their enormous eyes provide them with exceptional night vision, which makes them useful as guardians if tamed.


Stenonychosaurus

Small beast, unaligned

Armor Class 12

Hit Points 10 (1d6+7)

Speed 40 ft., climb 10 ft.

STR DEX CON INT WIS CHA

11 (+0) 15 (+2) 10 (+0) 3 (-4) 16 (+3) 10 (+0)

Skills Perception +5, Stealth +4, Sleight of Hand +4

Senses Darkvision 60 ft., passive Perception 15

Languages

Challenge 1/4

Keen Sight. The stenonychosaurus has advantage on all Perception checks that rely on sight.

 

Actions

Bite. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 2 (1d4) piercing damage.

Talons. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 5 (2d4) piercing damage.


Titanosaur

While the term “titanosaur” refers to a diverse group of dinosaurs, some of which are only slightly larger than cattle when fully-grown, the name is most commonly associated with earth-shaking behemoths that tower over their surroundings like walking mountains. Even the most ferocious predatory dinosaurs know to stay clear of an adult giant titanosaur, lest they be trampled into dust.


Titanosaur

Gargantuan beast, unaligned

Armor Class 14 (natural armor)

Hit Points 155 (10d20+50)

Speed 30 ft.

STR DEX CON INT WIS CHA

27 (+8) 8 (-1) 21 (+5) 2 (-4) 10 (+0) 8 (-1)

Senses passive Perception 10

Languages

Challenge 10

Trample. The titanosaur can move through the space of a large or smaller creature. The creature must make a DC 16 Dexterity saving throw or be knocked prone. If the creature is knocked prone, the titanosaur can make a stomp attack against it as a bonus action.

 

Actions

Stomp. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 62 (9d12+8) bludgeoning damage.


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