Passive tame. Best way is a trap. Make a trap with one foundation block. Make walls on two sides and one side with a door. Build walls two high with a hatch for a roof and leave one wall open for him to walk thru. Find a bigfoot and lead him into the trap by making him aggressive (there very territorial). Once on the trap seal him in and replace the door with a solid wall. Once he starts to attack the walls replace them all and he will become passibe. Carefully feed home berry thru the roof wile laying on your stomach until he is tamed. DO NOT STAY ON ROOF since bigfoot is territorial you will run the rick of making him aggressive. 90% secsess rate.