The Chicago Department of Aviation put out a bid for about 30 goats to trim the grass at O'Hare International Airport.
It idea is that the goats will eat grass and weeds in a specific area that is hard to mow. The area is outside the security fence, so there's no danger of goats on the runways.
Using goats will also help cut down on pollution produced by mechanical mowers.
San Francisco has been using goats for years at their airport, and Atlanta recently started a similar effort.
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