Gutting most animals is just like gutting a fish. You flip it over, start at its ass and cut to its throwt. Grab the stuff inside and toss on a bush. Done. Birds are different, you can make a cut between its legs, sideways, on the underside, and hook your finger and dig it out, or wait till you get home and just cut out the breast meat, the latter is what I usually do. This might sound disgusting, but it's a part of hunting.
