Want a more sustainable meat for the grill? Try a 13-foot python steak.

They’re scaly, fork-tongued and can measure upward of 20 feet long. Pythons may also be one of the most Earth-friendly meats to farm on the planet.

A group of researchers studied two large python species over 12 months on farms in Thailand and Vietnam — where snake meat is considered a delicacy — and found that they were more efficient to raise than other livestock.