What process, similar to ruminants but slower, is essential for breaking down tough cellulose in the sloth's gut?

Answer

Foregut fermentation utilizing symbiotic bacteria

Sloths rely heavily on foregut fermentation within their multi-chambered stomach, where specialized symbiotic bacteria break down the tough cellulose and lignin.

What process, similar to ruminants but slower, is essential for breaking down tough cellulose in the sloth's gut?
dietanimalmammalherbivoreSloth