Dinosaur, Lystrosaurus

Family: Dinosaurs

This creature, roughly the size of a hog, roots in the soil with tusks pointing downward from its upper jaw. The middle joints of its forelimbs point outward, like a lizard, and its thick, gray hide is sparsely covered with wiry hair down its back to its stubby tail. It makes a grunting, muttering sound to itself.

Medium beast, unaligned

Armor Class 14 (natural armor)
Hit Points 45 (6d8 + 18)
Speed 30 ft., burrow 5 ft.

16 (+3) 10 (+0) 16 (+3) 2 (-4) 9 (-1) 6 (-2)

Skills Athletics +5, Perception +3 Saving Throws Constitution +5, Wisdom +1
Senses passive Perception 13
Challenge 2 (450 XP)

Special Traits

  • Headbutt. If the lystrosaurus moves at least 10 feet straight toward a creature and then hits it with a ram attack on the same turn, the target must succeed on a DC 13 Strength saving throw or be knocked prone. If the target is prone, the lystrosaurus can make one bite attack against it immediately as a bonus action.


  • Ram. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) bludgeoning damage.
  • Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 13 (3d6 + 3) piercing damage.


Often used as guard animals by kobolds in warmer climes, the lystrosaurus has a reputation as a sturdy and self-sufficient companion. When not working in some capacity, it rips up vegetation and masticates the day away. At night, it digs shallow burrows in the ground to sleep, which are occasionally expanded upon by its masters.

Section 15: Copyright Notice

Creature Codex. © 2018 Open Design LLC; Authors Wolfgang Baur, Dan Dillon, Richard Green, James Haeck, Chris Harris, Jeremy Hochhalter, James Introcaso, Chris Lockey, Shawn Merwin, and Jon Sawatsky.