Pain Absorption is the altruistic ability to absorb another's pain to aid in their recovery or to comfort them. Supernatural and unnatural creatures can possess this power, and despite its altruistic nature, this ability can have costs such as Alphas losing their alpha spark or even risking their lives. In a dark usage, this power can be used to steal another's power by mortally wounding them and then siphoning their pain and life.
Species that can siphon pain
Chimera
Theo is able to siphon pain and has used it to kill and steal the power from two other chimeras.
Werewolf
Werewolves can siphon the pain from presumably any animal that can feel pain, heavy use of this ability takes a toll on the user and can result in loss of life or loss of power if the user is an alpha.
Werecoyote
Werecoyotes are capable siphoning pain just like Werewolves with there presumably being no difference in their capabilities in comparison.