they like extremely forested steep places like the rockie mountians and sierra nevadas and they are nocternal and are intelegent enough to hide from humans and they are probably like humans burying or cannibalizing there dead and in such cold forested climates dead things decompose much more rapidly then in the desert or cities and the evidence has been only found by scientists but the samples are usauly so degraded that it is inpossibal to extract dna but most dna samples point to a hybrid between a great ape and a human the only way to prove bigfoot is a speices they need alot of dna such as a living or dead bigfoot and native americans only name real animals and they have cavepaintings,names,totems and stories of this creature for thousands of years and the mountian gorilla was thought to be a myth until a live one was caught in the early 1800s.