(Dinosaur) Anchisaurus
Watch out! Anchisaurus stalks the ancient forests with surprising speed and cunning, a fierce survivor from the dawn of dinosaurs!
Anchisaurus is a slender, lightly built dinosaur standing about 4 to 6 feet long. It has a long neck and tail, with a narrow skull filled with small, leaf-shaped teeth. Its limbs are adapted for bipedal locomotion, but it can also move on all fours when needed. The skin is likely scaly and mottled in earth tones, helping it blend into dense underbrush and forest floors.
Behaviour:
Agile and alert, it is both a cautious forager and opportunistic feeder. It grazes on low-lying plants but may also scavenge or hunt small insects and other invertebrates. It is a social creature that travels in small groups or family units to watch for predators and warn each other of danger with quick calls and sudden bursts of speed.
Habitat:
Dwelling in Early Jurassic woodlands and floodplains, favoring areas with dense vegetation and access to fresh water. It thrives in mixed forests and fern-rich environments where it can hide from larger predators.
Modus Operandi:
Anchisaurus relies on speed, stealth, and group vigilance to avoid predators. When threatened, it swiftly flees using its strong legs, often zigzagging through trees and underbrush to evade capture. Its sharp senses help detect danger early, allowing it to communicate warnings to its companions.
Motivation:
Driven by survival instincts, Anchisaurus seeks abundant food sources while avoiding threats. Its motivation centers on feeding, protecting its young, and maintaining social bonds within its group.
Anchisaurus 5e
Anchisaurus 3.5
Anchisaurus
Small Beast, Unaligned
Armor Class: 14 (natural agility)
Hit Points: 45 (6d6 + 24)
Speed: 50 ft.
STR | DEX | CON | INT | WIS | CHA |
---|---|---|---|---|---|
12 (+1) | 18 (+4) | 18 (+4) | 3 (–4) | 14 (+2) | 6 (–2) |
Saving Throws: Dex +7, Wis +5
Skills: Perception +5, Stealth +7
Senses: Passive Perception 15
Languages: —
Challenge: 2 (450 XP)
Proficiency Bonus: +3
Traits
- Pack Tactics.
The Anchisaurus has advantage on attack rolls against a creature if at least one of the Anchisaurus’s allies is within 5 feet of the creature and the ally isn’t incapacitated. - Evasive Movement.
When subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the Anchisaurus takes no damage on a successful save. - Keen Senses.
The Anchisaurus has advantage on Wisdom (Perception) checks relying on hearing or smell.
Actions
- Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target.
Hit: 8 (1d10 + 3) piercing damage. - Claw Swipe. Melee Weapon Attack: +5 to hit, reach 5 ft., one target.
Hit: 6 (1d6 + 3) slashing damage. - Quick Dash (Recharge 5–6).
The Anchisaurus moves up to its speed without provoking opportunity attacks. If it ends this movement adjacent to a creature, it can make a single Claw Swipe attack as part of the same action.
Reactions
- Coordinated Retreat.
When a creature misses the Anchisaurus with a melee attack, it can use its reaction to move up to 20 feet away from the attacker without provoking opportunity attacks.
Tactics
- Hit and Run: The Anchisaurus uses its superior speed and agility to strike quickly and retreat before the enemy can counterattack.
- Pack Cooperation: It works closely with other Anchisaurs, coordinating attacks to overwhelm foes through pack tactics and shared vigilance.
- Avoiding Direct Combat: Prefers to use stealth and ambush tactics, retreating when outmatched and regrouping with the herd.
Anchisaurus

This dinosaur is just over seven feet long, with a long, slender neck and tail. As you watch, it lifts its front legs, standing on its hind legs to reach some leaves high in the nearby tree. Its forearms grasp a branch, as if they had humanlike hands.
Originally Posted by Shade of the En World forums.
On this Thread
This prosauropod spends most of its time as a quadruped, but is capable of spending periods of time in a bipedal position in order to reach high leaves. Although generally herbivorous, with blunt teeth better suited for vegetation, anchisauruses have been known to eat meat. An anchisaurus is just over 7 feet long and weighs around 60 pounds.
Dinosaur, Anchisaurus | |
Medium animal | |
Hit Dice | 2d8+2 (11 hp) |
Initiative | +2 |
Speed | 30 ft. (6 squares), Climb 20 ft. |
Armor Class | 13 (+2 Dexterity, +1 natural), touch 12, flat-footed 11 |
Base Attack/Grapple | +1/+1 |
Attack | Slam +1 melee (1d4) |
Full Attack | Slam +1 melee (1d4) |
Space/Reach | 5 ft./5 ft. |
Special Attacks | – |
Special Qualities | Low-Light Vision, Scent |
Saves | Fort +4, Ref +5, Will +2 |
Abilities | Strength 10, Dexterity 14, Constitution 12, Intelligence 2, Wisdom 14, Charisma 10 |
Skills | Climb +11, Listen +5, Spot +5 |
Feats | Alertness |
Environment | Any land |
Organization | Solitary, pair or herd (3-20) |
Challenge Rating | 1 |
Treasure | None |
Alignment | Always neutral |
Advancement | 3-6 HD (Medium) |
COMBAT
An anchisaurus only bites in retaliation, preferring to Climb a nearby tree to escape predators.
Skills: An anchisaurus has a +8 racial bonus on Climb checks and can always choose to take 10 on Climb checks, even if rushed or threatened.
Originally appeared in Monstrous Compendium Volume Three: Forgotten Realms Appendix (1989).