Bigfoot is an Alien
Of all the bigfoot theories I’ve heard, the one that makes the most sense is that Bigfoot’s are aliens. This would explain the lack of bones and physical evidence since they are just visiting from another planet. I also believe that they are scouting out places to setup bases to eventually mount an attack against humans. this is why they are spotted all over the world, they plan on taking over the earth. Bigfoots are just waiting for man to fuck up this world enough so that when anarchy ensues Bigfoots will be there to swoop in and take over, claiming the earth as there own and enslaving man kind.
Think about it!