The surprising thing is, Darma wallabies release about eighty percent less methane per unit of digestible food than livestock. So what's going on? Intrigued by wallabies' unique digestion, scientists used genetic testing to find out what kinds of bacteria were living in wallabies' guts. Out of about 500 species identified, they found a bacterial species related to Succinivibrio that they call WG 1. Instead of making methane during fermentation, these bacteria make succinate, a chemical that gives wine and beer a salty and bitter flavor. Now that they've identified the wallaby bacteria, scientists hope to find related species of bacteria in other livestock. If they can encourage the succinate bacteria to grow in larger numbers, they may be able to decrease the amount of methane the animals produce. Livestock will still have gas, but less of it. Unfortunately, the bacteria probably won't help the occasional human emission.