Dragon Around is a Donald Duck short released 16 July 1954.
Chip and Dale think they see a dragon coming toward their tree. It's really Donald Duck with a steam shovel, clearing trees to make room for a freeway. He plays along, fitting a welding torch to the jaws so it can breathe fire. The chipmunks become knights in shining armor to fight back. With some fast wrench work, the rodents win.