Facebook chief executive Mark Zuckerberg, who vowed earlier this year that he would only eat the meat of animals he has killed himself (including pigs, goats and chickens), has now found a new more exotic creature to hunt: the bison.

According to a report in Fortune.com, Zuckerberg recently got a hunting license and shot and killed a bison for his dinner table.

The report states that, in adhering to Zuckerberg’s pledge to eat healthier, bison meat is “tender and sweeter than beef [and] also lower in fat and cholesterol.”

Fortune also noted that during the company’s F8 developer’s conference last week, Zuckerberg's personal Facebook page was shown on a large screen behind him. The page featured a photograph of sandwich with the caption Bison Burgers.

Back in May, Zuckerberg told Fortune: I'm eating a lot healthier foods. And I've learned a lot about sustainable farming and raising of animals. It's easy to take the food we eat for granted when we can eat good things every day.

According to Defenders of Wildlife (DoW), bison are the largest land mammal in North America. Bison can grow to a height of 6.5 feet, length of up to 12.5 feet and weigh as much as 2000 pounds.

At one time, up to 30-million bison grazed across the continent, but after mass slaughter in the 1870s, their numbers were dramatically reduced.

DoW estimated that today approximately 500,000 bison live across North America.

“Most are not pure bison but rather have been cross-bred with cattle in the past and are raised as livestock on ranches. Fewer than 30,000 bison are in conservation herds, and fewer than 5,000 are free-ranging and disease-free,” DoW said.