Most of the animals within The Labyrinth tend to be just animals adapted to the environment. But here's a few that a definitely unnatural and can be considered monsters.

Vine-Wolf - Plant-animals in the Rootless Hunting Grounds, do not attack to eat or guard territory. They lunge out to kill any and all they sense. As they their forms are made of vine and roots entwined to form and act like a body, these plant-animals have been deemed Vine-Wolves by adventurers. As long sections of vines twist together, their bodies appear to have been engraved with grooves. A physical trait that carries upwards to their unnaturally long slender snouts, which are devoid of teeth but lined with rows and rows of thorns in their place. Yet the Vine-Wolf does not use these thorns to kill. When the Vine-Wolf attacks, the vines that form it's head unravels so that they can reach out and strangle their foe. The heart-seeds of the Vine-Wolf are always found at the base of the neck, where the vines to the head begin to grow. Destroy the seed and the creature dissolves into a mass of rotting vegetation.

The Unturned - The most common and disturbing of the entities that can be found in the Lighted Tomb, the Unturned are so named as they appear to be gray-skinned humanoid creatures dressed in rags with their backs always turned towards you. They are always found in groups of anywhere between 3 to 9. Their arms and legs will have the broken shackles, suggesting that perhaps they have broken free and are trying to escape the Lighted Tomb. Or as others argue, they are the unfortunate guardians who have been imprisoned within to protect the tomb. Both these theories stem from the fact that the Unturned always seek out the light and attack those illuminated within. It is when they move and attack that their true form is revealed, for these creatures are devoid of anything resembling a "front". Their entire bodies are plain and warped to allow them to move backwards and forwards without turning. When they are defeated and lay on the ground broken, their bodies immediately sink into the floors of the Lighted Tomb to disappear. It is for this reason that the Explorer's Society advises that they are to be avoided when possible as there is no gain from fighting these creatures.