I thought I'd do a little research about some edible plants, in the area of North Georgia that the boys say they found the expired bipedal hominid.............
because you know it's like the Checkers commercial says: "Ya Gotta Eat!"
Here's a list of some of the plants that Mr. Foot might have been dining on when he was still vertically mobile:
Prickly pear cactus
Water lily and lotus
Wild onion and garlic
Now that's a whole heap of available vegetation but I'd have to guess that Mr. Foot would probably enjoy some wild critters too. Maybe some deer, opposum, rabbit, fish, etc...
These Bigfoots (or is it Bigfeet?) probably spend a majority of their time looking for food to maintain those tremendous physiques. Hell, I need at least 2500 calories a day to charge my batteries and get me motivated. These Bigfoots (feet) must need at least 3 times that or more, don't you think?