Yes. The SF Water Department uses goats to keep the Hetch Hetchy water pipeline route clear. The pipeline route is long, narrow, and goes through hills, so it's hard to mow. They fence off a section with portable electric fence and put in about a hundred goats. In a day or two all the brush is gone. Then, on to the next section.

Some of the larger parks use sheep to graze down large grassy open areas. The goats are more useful in hilly areas and less picky about what they will eat.