Oromasaur - Creature Concept art

The oromasaur is a creature that lives in snow-covered mountains, where it builds nests at the top of cliffs or inside crevices and caves.
Exclusively carnivorous, it feeds on mammals, often of imposing size, with the help of a fascinating organ that enables it to generate cries that can exceed 180 dB. The power of such a shockwave is enough to stun a full-sized elk, and even kill some smaller breeds of animal.
In winter, when food is scarcer, or when they need to feed their young, these animals have been observed to be intelligent enough to remember the migratory paths of herds of herbivores and use their cries to generate avalanches on the trajectory of their prey.
They then use their large claws and shovel-shaped horns on their snouts to flush out their prey from the icy mass.