Ioprey

Ioprey are a Velociprey subspecies that inhabit jungle, swamp, fortress and volcanic zones, they can also be spotted in the great forest region in MHFU and Frontier. They are covered in a red hide with black spots. Their lower body is white. They possess large heads, containing Poison Sacs in their throat. In Monster Hunter and in Monster Hunter Freedom Poison Sacs can be carved from these blood-thirsty monsters. The Ioprey's cries are quite different than the other "preys", sounding a bit more dragonlike. Ioprey has a much more amphibian look than the other "preys" due to their salamander-like skin that constantly needs moisture and the frog-like throat sac. This might explain why a major amount of Ioprey live in the Swamps and Jungles. They might also migrate from volcanoes to these areas to prevent dehydration.

Iopreys are the largest of all the prey species. Due to living in the most unforgiving habitats, they evolved to become the most dangerous and strongest prey of all. They travel in packs and have the ability to spit poison. The duration of the poison effect varies depending on the rank of the Ioprey, as does the efficiency of the poison. For instance, a G-rank Ioprey's poison lasts much longer than a low rank one's and is more harmful.

Sometimes when killed in mid-air or by specific attacks they, like all '-prey', may be divided into multiple pieces leaving nothing to carve.

They have larger alphas (pack leaders) called Iodromes. In the original Monster Hunter they were constantly spawning but in later games there is a fixed number of them in each area (except of course in the Arena, which is a special case).

They first appeared in Monster Hunter and are in every game so far except for Monster Hunter Tri.

Ioprey have the most health of any 'prey.