Got weeds? US environmentalists call in the G.O.A.T.s

The landscaping squad of Mocha, Wynonna, Nelson and Beckham yank out weeds at a Texas park. They don't carry chainsaws or use herbicides. They are goats, and this environmentally friendly initiative is, for them, merely lunch.
The hungry goats are part of a team of 150 ruminants pruning the brush on a 6.5 acre (2.6 hectares) section of San Antonio's sprawling Brackenridge Park Conservancy, in the southwestern US.