Troodonism
A troodonism is a bug in 
ARK: Survival Evolved and 
ARK: Survival Ascended where a species has more than one possible value for one or more stats. The bug was first observed often in 
Troodon and thus was named Troodonism.
This bug was mentioned to be soon worked-around in the vanilla content of ARK: Survival Ascended through a future patch by lead ARK 2 designer Craig Brown[1]. However, it doesn't seem like the core issue has been resolved, and creatures released in future or in mods may still be affected.
Overview
The bug was first observed in a sometimes occurring and unexplained change of the HP value of the 
Pulmonoscorpius in the early access version 255.0, but it might have been in the game for longer. It is caused by oversight in the game's programming. Currently it's not precisely known how the game decides which value to take, and the same creature can have inconsistent or different stat values after its stat values are recalculated (e.g. after it's been in a 
Cryopod or has been uploaded in an Obelisk).
Wild spawns of affected species are also known to have their stats for wild levels miscalculated, and those values can be carried by a creature even if tamed well until a server restart.
There is no known way to fix stats without restarting the server or cryopodding the creature (possibly multiple times).
Affected Species
Desert Titan- Health (base value 250000 🡒 200000)
Desert Titan Flock- Health (base value 4000 🡒 7500)
Electrophorus and its Aberrant variant- Health (base value 180 🡒 260)
Ice Titan- Health (base value 350000 🡒 230000)
Pegomastax- Health (base value 120 🡒 200)
- Pulmonoscorpius and its Aberrant variant
- Health (base value 280 🡒 300)
Titanoboa and its Aberrant variant- Health (base value 170 🡒 300)
- Troodon
- Food (base value 200 🡒 100)
Cause of the bug
It is not known exactly why the game decides to choose a wrong base value for a stat.
Specification of creature's stats are specified in a character status component. There's always a single, global instance of this component, and an additional instance per each spawned creature (the component also holds current stat values). Troodonisms happen when the game calculates the stats in an inconsistent way:
- Using creature's base value but global for some calcs (usually happens with wild creatures and tames: stats awarded for level ups are most often miscalculated)
- Using only the global value for all calcs (happens when a tame is released from a Cryopod).