Could you clean up the sketch lines in the extra gallery image? The sketch lines make it look messy.
I like the color gradation.
"In the cold tundra’s" Cold tundras.
"their face exposed." Its face? Were you going for "An adult tyrant crested limbless spend large amounts of time entirely underground, with only the top portion of its face exposed."
"their snout" Its snout/their snouts.
"being known to attack" That seems extraneous. If you want to suggest it is surprising or little-known, you could say it attacks subadult polar barons only rarely.
"Sub adult" should be "subadult".
"Crested limbless, on the other hand", You mean "limblesses". If it has weird grammar like "deer" or "sheep", a note should be made of it in the description. However, "limblesses" seems already established as the plural form:
https://sagan4alpha.miraheze.org/wiki/Limblesses"drake tundra" should be "Drake Tundra" or "Drake tundra". Drake is a continent.
"Once they catch something" It would make sense to use the collective possesive if they hunt in packs, like wolves, but they do not do so as adults and that part of the description seems to be describing adult hunting patterns, so using the singular makes sense.
"these young limbless" Limblesses. There are other instances of incorrect pluralization, too.
"their life is simply to breathe" Their lives, plural.
"merely kill her" Merely kill her? "Merely" downplays something; saying "merely scratches her" or "merely leaves superficial wounds, despite his jaw strength" makes sense, but not "merely kill her". Did you mean "surely kill", as in "It's not guaranteed to kill her, but very likely".
"will be hopefully caught". Did you mean "likely caught" or "if they are lucky"?