Bigfoot researcher and filmmaker Kelley Lockman has a theory concerning the discoveries of carcasses drained of blood.
If there really is a species of unknown, bipedal hominid roaming the forests of North America, what exactly does it eat and why have we never found any evidence of it ?
According to Kelley Lockman - a Bigfoot investigator and filmmaker - the discovery of a dead buzzard and deer in the woods of North Carolina recently could provide an answer to this very question.
Both animals had seemingly been drained of blood by some sort of predator.
Lockman believes that this predator could in fact be Bigfoot.
"I think this one was a wa[r]ning to us," he wrote on Reddit. "There was no blood. I have recorded witness testimony describing a very similar scene. It may be that they just drink the blood."
In his latest documentary, Lockman interviews Carolyn Allen - a dog owner who believes that a Bigfoot might have been responsible for killing her two German Shepherds.
Both dogs had been drained of blood, she noted, despite being kept behind an 8ft fence.
"It was like it had broken their necks. There was no blood or nothing," she said.
"It's hard to describe - they were looking backwards."
You can check out the documentary for yourself below.