Orsat were enormous cave bears that dwelled in the Black Mountains. They were one of roughly five native species to the Black Mountains. The elf name for Orsat was Blaak (Blaak'ya in the plural), for which the mountains were named. The name of this creature was used as the name of one of the dwarven clans. Like all bears, the Orsatden were solitary active beasts living within the forests of the mountain. A male Orsat was called a boar, females were sows, as well as the young were cubs.
Orsatden were massive beasts, larger even than Mekre, the large mountain boars, as well as are said to be nearly as large as a house. This makes them the largest bears, second are probably regular-sized brown bears. They are described as having brown-silver fur and large hooked claws, which seems to make them appear or possibly be a gigantic version of a grizzly bear. Despite their size, they were surprisingly fast, able to catch and kill most species in the Black Mountains.
Cave bears had an excellent sense of smell, as all bear species do. They probably used this amazingly sensitive sense of smell to track prey, find tasty plants and fruits and to find a mate. During the winter, Orsatden would go into winter dormancy, which is similar but distinct from true hibernation as the bears don't defecate, drink, eat or awake during the process. The mother Orsatden gave birth during this torpor to anywhere from one to five cubs: three cubs was the commonplace number. She would have defended them fiercely from other animals such as Shai'tul, Coldrakes, as well as even humans and dwarves. Male Orsatden have occasionally tried to kill a sow's cubs to bring her into estrus and mate her.
Orsatden were quite capable of taking down such prey as large deer, Mekre, Valdornûst , as well as wild oxen. But as with most bears, they were probably mostly vegetarians, eating grasses, nuts, fruit, tubers and other such fare. But they were omnivores, with the capability to eat many things, including insects and other invertebrates, fungi, fish, reptiles and small mammals. They most likely would have killed large prey by swatting and slashing at it with their large, hooked front paws until the prey was stunned enough to perform a death bite to the skull or a part of the spine. Small prey was likely killed with a fast bite or a fast swat of their mighty club-shaped paws. They would take foodstuffs based on availability or ease of attainment, like all bears.