- (forestry) Pine forest where the trees have grown extremely thin and close together.
1983, United States. Bureau of Land Management. Platte River Resource Area, Forest ecology/plant identification trail, page 7:
- Doghair stands result from too many pine trees regenerating following fire or clearcutting which opens the forest canopy.
1990, Olympic National Forest (N.F.), Land and Resource(s) ..., page 142:
- The acres of doghair will continue to decline, due to the experimental program.