Video posted on YouTube this month purportedly shows a snake throwing up an entire cow over the course of a minute-and-a-half. The clip, “Anaconda Snake Pukes Out A Cow In A Jungle River,” has been viewed more than 151,400 times in five days.

 Some YouTube commenters said the creature may actually be a capybara, a large rodent resembling a guinea pig that is native to South America. They’re also common snacks for anacondas.

But the snakes are known to feast on a variety of animals, including fish, large birds and even jaguars. In captivity, they’re fed rabbits and frozen pigs.

One species, the green anaconda of South America, is the largest snake in the world, growing to more than 29 feet and weighing more than 550 pounds, according to National Geographic.