the.com/ruminant

An animal that eats its dinner, then eats its dinner again, for emphasis.

means A hoofed mammal (like a cow, sheep, goat, or deer) with a multi-chambered stomach that chews cud — food it brings back up from its first stomach to chew a second time.

from From Latin 'ruminari,' meaning to chew the cud, built from 'rumen,' the name for the first stomach chamber itself. The verb also drifted into a figurative sense early on — to turn something over slowly in the mind — which is exactly why 'ruminate' means to mull something over: the Romans had already noticed that cows chewing cud look a lot like people lost in thought.

stomach count
four chambers, one meal, zero regrets
cud chewing
regurgitated food re-chewed up to eight hours daily
members
cows, sheep, giraffes, deer, not horses
methane output
belching, not farting, drives most of their emissions
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