Watch World's Weirdest Season 4 Episode 7 Online

Nat Geo WILD goes behind closed barn doors to reveal some of the most bizarre farms, farming methods and farmers on the planet. From the unusual to the downright dangerous, it's a rarely seen side of farming. Visit a farm in Utah that is home to spider goats, the world's first mammal/arachnid hybrids. In Thailand, one farmer is using elephants to produce coffee. And visit a leech farm in Wales where the bloodsucking creatures are used for medical science.