Mondo Knows Facts

A cow digests grass in four chambers

Microbes in the rumen break down cellulose the cow cannot digest alone The rumen holds a dense community of bacteria and protozoa that ferment plant fibre. Cud is returned to the mouth for more chewing and more saliva. The process produces methane as a by-product, which the animal releases. It sits in Mondo's animals collection, one of 200 facts that each trace back to the reference below.

A cow digests grass in four chambers: A dual breed (beef and milk) cow near Oeschinen Lake,
Kim Hansen ยท CC BY-SA 3.0 ยท licence ยท source

Where this comes from

Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: cattle, digestion, microbes

A cow digests grass in four chambers: the short answers

Where does this come from, and can I check it?
Microbes in the rumen break down cellulose the cow cannot digest alone. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a animals fact?
Yes. It sits on the Animals shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?
The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.