While it may be difficult to imagine a clean pig, it is even harder to imagine a pig that helps to protect the environment.
Nonetheless, a pig farm in the state of Morelos, Mexico, has achieved both, with a positive ecological impact through the reduction of greenhouse gas emissions.
Both the workers and animals at the Tlaquiltenango farm contribute to this goal as part of one of several green initiatives transforming Mexico into a regional leader in environmental protection. By 2050, the country hopes to have reduced greenhouse gas emissions by half.
Workers and visitors must shower and don a khaki jumpsuit and boots before entering the open-sided roofed area where the animals are housed.
Unlike other pork production facilities, here the animals look clean and are not in direct contact with their feces, although the farm does still smell of pig.
The intense sun in this region increases the smell. But it is now tolerable, natural even; an odor that is to be expected in the countryside if not on a pig farm.
"Previously, there were many complaints (from neighboring communities) about the smell and the flies," says Farm Supervisor Angie Vega.