Fibrobacter succinogenes (along with Ruminococcus albus and Ruminococcus flavefaciens) is one of the predominant cellulolytic bacterial species in the rumen responsible for digesting fibrous plant cell walls.

Eructation (belching) is the physiological reflex by which ruminants expel large quantities of fermentation gases (chiefly $\text{CO}_2$ and $\text{CH}_4$) from the reticulorumen through the esophagus and out the mouth.