Most of us prefer a bit of variety in what we eat. Not true for these five "specialist" species, who seem perfectly content relying on just a single type of food. Humans are, by nature, omnivores. Our ...
The world is home to about 1.5 billion cows, most of them bred and raised for the meat and dairy industry. Each of them has a quadripartite stomach, whose largest section is called rumen. An adult cow ...
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