For anyone that thinks bigfoot couldn't exist you should do a quick google searchon the saola. It's a big, brightly-colored bovid that looks similar to an oryx and it wasn't discovered by scientists until the early 1990's in Vietnam. If something that big and brightly colored can hide in a tiny country with several million people bigfoot has to at least be a possibility. So get out there and bag us a sasquatch Bigmoose2003!!! I'd agree with the other comments and go check for tracks. Perceptions of size can be very deceiving over long distances and the terrain features the animals were crossing could play a huge roll in how they looked. Four legged animals running away from you up a steep hill could easily look bipedal.