While I'm surprised I haven't encountered them sooner, I'd rather them just vanish all-together. Ceratosaurus is as ruthless as they are quick. While not the most damaging carnivores you'll encounter, they are certainly some of the most persistent. I've seen these creatures even exhibit a sort of... stalking behavior unlike anything else I've seen on The Island. While they may not make themselves known to you immediately, they certainly know where YOU are.
Domesticated
The spines on Ceratosaurus have a very unique and powerful trait: Venom! This hemotoxin has the bizarre reaction with blood, making it incredibly nutritious to Carnivores. The more intense the venom infection, the more nutritious the blood becomes. I've witnessed tribes that have managed to tame these beasts use it to great effect against larger threats, and even the Island's guardians! Perhaps this desire to devour envenomed prey can be used against them...?
Type in values of a wild creature to see on which stats it's emphasized. Green values on a high-level creature are very good for breeding. If you have already tamed your creature you can try to recover the breeding stats with an external tool.[2]
Ceratosaurus
The stat-calculator does not work in the mobile-view, see here for alternatives: Apps
Note that after the creature is tamed it gets bonuses on some stats depending on the taming effectiveness. This makes it hard to retrieve the levels on a tamed creature, so this tool is only for wild ones, but gives a first impression, how well the stats are distributed.
If the rider aims with the camera at the sides or at the back of the mount and attacks the Ceratosaurus will turn to that direction and bites, needs at least 90° degrees.
Can be used every 0.45s by both a rider and the AI.
The Ceratosaurus attacks the target for 40 damage.
This attacks does different animations depending of where the camera is looking:
When looking forward, the Ceratosaurus headbutts the target with it's horns.
When looking to the sides or on its back, the Ceratosaurus lashes all opponents around it with its tail and turns to that direction.
The target that is hit will be applied with the Blood Vemon debuff. Whenever the debuff is applied and whenever the Cerato continues to attack that target, it will apply a healing surge the Ceratosaurus. This also heals nearby tamed carnivores.
When the Ceratosaurus is running, it gains more speed the longer it runs, a speed bar will appear indicating the current and the maximum possible speed. Once reaching 75% or more of the sprinting limit speed, the Ceratosaurus will destroy any tree and rock that it collides with and can perform a more powerful horn thrust attack. If it stops, the accumulated speed is lost and it has to start again.
Damage Reflection
The Ceratosaurus returns 7% of the Damage received back to its aggressor. It also applies Blood Vemon to its aggresor.
Combat
General
Strategy
Weaponry
Dangers
Weakness
Using long-range weaponry is useful in avoiding them using bleed attacks, however, be wary of their speed once they target you. Using a creature with good knockback on attacks is also effective, allowing you to avoid most bleed attacks if the Cerato is kept at bay.
Taming
Taming Method
Taming a Ceratosaurus involves a relatively simple taming process, but requires your character to be level 75. You will need to hunt wild Ceratosaurus in order to obtain their Venom Spines. These are used to craft a Hemogoblin Cocktail, which are restricted to an engram unlocked at level 75.
Once you have located a Ceratosaurus of your choice, you will need to feed one of your tames the cocktail, which will give it a status effect that will attract wild Ceratosaurus. When the Ceratosaurus attacks the creature with the status effect, it will slowly become "blood-drunk" over time. Once it has become totally drunk, you can then begin to passive feed them. It should be noted however that higher-level Ceratosaurus will take longer to become drunk and will require more feedings.
It is recommended to use tames that have a lot of health and equip them with high-quality saddles. Creatures with natural damage reduction such as Stegosaurus are recommended.
It is unknown if the Ceratosaurus can be placed in a trap to prevent it from wandering or running away, or if it needs space to roam while taming.
Utility
Roles
Fight Healer: The Ceratosaurus' "blood explosion" heals allied carnivorous creatures based on the amount of hits that the Cerato does and receives, and the total Health that the target has.
Big Fights Healer: On massive fights (Mainly PvP) the Ceratosaurus can be useful to heal common carnivores like Rexes or Giganotosaurus. (Level up Health)
Boss Healer: This mechanic also work on bosses, so the Ceratosaurus can be valuable as supports during the boss fights and can replace the Daeodon on certain situations if all the army is carnivore. (Level up Health and Damage)
Combatant: The Ceratosaurus has decent base stats for a mid-size creature and a good attack speed. (level up Health and Damage)
Notes
For information pertaining specifically to the real-world Ceratosaurus, see the relevant Wikipedia article.
Ceratosaurus punctura roughly translates to "pricking horned lizard".
Ceratosaurus is the second creature originating from a mod to be added to the game, the first being Fenrir from Fjordur.
Ceratosaurus is also the first creature originating from a mod to not be added in a DLC (as free maps are technically DLC).
Ceratosaurus' design, "default"/dossier color scheme, and abilities may have been inspired by (and also a reference to) the monster Espinas from the Monster Hunter franchise. Espinas is a large wyvern with green scales and red thorn-like spikes. It is known for spitting fireballs laced with poison and relentlessly charging at hunters.
Ceratosaurus's eyes are reminiscent to that of a Tokay Gecko.
With its build-up speed, the Ceratosaurus is currently the fastest creature in ASA, beating the Gallimimus.
Yes
Health
Stamina
Oxygen
Food
Weight
Melee Damage
Movement Speed
Torpidity
Damage received back to its aggressor. It also applies 
Blood Vemon to its aggresor.
Hemogoblin Cocktail, which are restricted to an engram unlocked at level 75.
Stegosaurus are recommended.
Health that the target has.
Rexes or 
Giganotosaurus. (Level up Health)
Daeodon on certain situations if all the army is carnivore. (Level up Health and Damage)
Fenrir from Fjordur.
Gallimimus.
ARK: Survival Ascended Changes
