Ambam, the gorilla that walks like a human. Supposedly, his father walked this way and his two sisters sort of can walk this way.

Ambam Walking

Ambam walking and Standing

I do believe that Bigfoot exists. This gorilla proves that a gorilla can even walk like a human. Surely, a Bigfoot type animal or being could exist in the wilds of Canada(Sasquatch), Oklahoma(Oklahma Bigfoot Site), Arkansas, Florida(Swamp Ape), or China(Yeti).