Spaksnout

Medium-sized dinosaurs the size of muskoxen, spaksnouts wander the tundra in small herds, grazing the moss and lichens that grow in the cold soil. They are warm-blooded animals with thick umber coats, usually walking on two legs as they migrate across the plains in search of food. The spaksnout's most notable attribute is its nose. Within the skull is a hollow cavity just above the nostrils, filled with warm air. This can be used to produce a loud trumpeting sound for communicating with other members of the herd, but that's only one use. More important are the colonies of red lumuoles that inhabit the cavity, absorbed into the body during times of the year when red lumuole-infused flowers bloom in the frosted soil that ordinarily could never support them. The red lumuoles warm the leaves and roots of the flowers, and are used for a similar purpose in the spaksnout. The microorganisms produce supernatural heat within the animal's nostrils and respiratory system, warming the dinosaur from the inside out even in the coldest blizzards and the darkest winters. Of course, such power isn't limited solely to homeotherm regulation. In the long springtime males will voraciously seek out and eat any plants which will provide them with new lumuoles, and their bodies work overtime producing the hormones necessary for upkeeping the ones they already have. The magical red microbes fully fuse with the bulls' bodies, producing immense amounts of heat while simultaneously granting the animal some immunity to it. The magically derived heat has to go somewhere, and bull spaksnouts know how to put it to good use. In elaborate displays to attract females, spaksnout males will snort enchanted flames from their nostrils, causing spouts of fire a few feet long. (Though in one record case, a male was spotted producing a plume of red flame twenty feet tall.) It is an obscene expenditure of energy, especially for the woefully inefficient mechanisms within the spaksnout body. It quickly tires the bulls out, leaving them weak and drained. It's absurd and it's wasteful, but it's extremely attractive to spaksnout cows. Once the excess lumuoles are burned out of their systems, the spaksnouts mate and produce offspring, which will remain huddled close to their mothers until their own lumuole colonies begin to populate their nasal cavities.