Trending Now. Answers. Best Answer: A bush hog is a mower that attaches to the back of a tractor. Technically, the device is a rotary cutter. Bush Hog is the most well-known manufacturer of rotary cutters, so the term bush hog gets applied to rotary cutters in general, much like we sometimes call photocopiers Xerox machines. That is out of the way, so your job would consist of driving a tractor with a rotary cutter attached to mow whatever is on this 3 acres.