a couple of azog's physical adaptations:
the presence of tapetum lucidum in orcs' eyes allows them to see in extremely low light conditions ; this is necessary as orcs are a primarily nocturnal species. especially for the northern orcs , as they are mostly cave dwelling in nature ( due to the northern tribes being an older variant of orc , which were bred in a world without light. ) this reflective layer in their eyes allows orcs to see light that is undetectable by the human eye.
an orc's sense of smell is roughly 10,000x stronger than a human's ― this varies from orc to orc , some having better senses than others. azog himself is capable of detecting a scent from up to a 1.5 miles away.
his ears can be moved directionally , aiding in more accurately detecting sound && which direction it is coming from. aside from their use in detecting sound , the movement of orcs' ears are used in nonverbal communication. in general orcs have better hearing than humans , though often lose it significantly over the course of their lives due to the loud nature of orcish culture.
azog's bite force is roughly 320 psi ― this is comparable to a rottweiler && about twice as strong as a human.
