Nírka
"The most popular and reliable mode of transportation in the realm of Úrma, these hardy creatures come in a multitude of breeds, all suited to their environments and easily adaptable to others. Although they are herbivorous, it is not above scavenging for meat when plants are scarce.”
A creature with a mixture of draconian/dinosaur/therapsid/horse inspirations I was finally able to flesh out. These are the draught/draft category of the breed, most commonly found in colder places.
