"SCP-966 are predatory creatures that resemble hairless, digitigrade humans, possessing an elongated face with a mouth lined with needle-like teeth. SCP-966 are visible only at wavelengths ranging from 700 nm to about 900 nm. This applies to all of SCP-966's tissues. SCP-966 feed on medium-to-large-sized animals, including humans. They hunt either alone or in pairs. After depriving their victims of sleep, SCP-966 will stalk their prey until the lack of rest incapacitates it. At this point, SCP-966 will proceed to consume it."