Researchers in California are working to genetically engineer the cow microbiome — and in ... But even as the calf slumbered, deep in his four-chambered stomach, minuscule organisms were hard ...

Animal scientists have been focusing on cows' four-chambered stomach—the rumen. "We are trying to help the rumen microbes do what they do," he said. "The microbes produce these enzymes that ...

Amid a challenging upbringing in foster care, animals provided Hailey Bartlett with a sense of connection, consistency, and comfort—ultimately inspiring her to pursue a career as a large-animal ...

And most of that comes from cows. A cow is a ruminant, an animal with four chambers in its stomach. The first chamber is called the rumen, which has an enzyme that creates methane as a byproduct ...

and those with four-chambered stomachs, like cows and deer. While chevrotains do have four stomach chambers, one of them (the omasum) is smaller and less developed than in other modern ruminants ...