When we think of early hominids, we know there is substantial evidence to indicate they both hunted and scavenged for protein sources. Meat was definitely a fair percentage of their diet.
Frans B.M. de Waal (TREE OF ORIGIN-- What primate behavior can tell us about human social evolution ) and Henry Bunn (University of Wisconsin ) both write extensively on this in their works about early man and meat eating / sharing.

"Power scavenging" is a term coined by Henry Bunn to describe how animals take meals from carnivores by driving them off and away from their kills. For instance, lions will often power scavenge from hyenas. Jackals have been witnessed doing the same.

Is it ridiculous to think that Bigfoot may also engage in power scavenging as well as predation?
Many reports across the country, in fact across the globe, include instances of the 'Forest People' running with carcasses, such as whitetail deer, under their arms or holding and even consuming smaller animals such as dogs and rabbits.
Did they prey upon these creatures themselves? Or could power scavenging be to their advantage in some cases and they too, like lions and early genus Homo, steal a free meal occasionally.
I certainly believe this to be a possibility, especially when there are so many theories making the crypto headlines these days about the symbiotic relationship of coyotes and Bigfoot.

It may be a friendly relationship,it may not be.
The research goes on........