User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5089728-20120926040336/@comment-98.21.111.59-20121004001743

If you were to take into account one of the most likely first forms of life you could then understand that there are millions of ways it could have evolved, and being completely resistant to heat (including high temperature substances, such as lava), means that agnaktor may have abilities that we can't observe simply from a hunter's standpoint.

This is also a valid argument in many other game series as well, including Metroid. In Metroid: Other M, one of the main antagonists of the lava biome was a large lava-dwelling creature that has a large number of eyes and somewhat resembles a cross between a coelocanth and a crustacean. Obviously well-adapted to spending its life in lava, it's plausible that creatures more resemblent of Earth life could adapt just as well. There are 7 criteria required for something to be considered a living thing (which is the reason viruses aren't technically alive)

Growth & Development,

Responsiveness,

Homeostasis,

Metabolism,

Reproduction,

Heredity &

Cellular Structure

With this in mind, life could evolve in so many different ways it would be impossible to categorize every possible variation.

A blog somewhat similar to this one existed up until recently (it was deleted for an apparently very profane and unneccesary comment), though it discussed rather the origins of the monsters rather than their adaptations.