Herbivores are the organisms that are adopted to eat plants. Harbivory is a form of predation in which
organisms consume autotrophs. i.e. in this context Harbivory refers to animals eating plants.Cellulase due
to its massive applicability has been used in various industrial processes such as biofuels like bioethanol,
triphasic biomethanation; agricultural and plant waste management ; chiral separation and ligand binding
studies. The cellulase is used for many industrially important processes like commercial food processing
in coffee, brewery, wineries, and textile and paper industries.Cellulases that catalyzed the hydrolysis of
cellulose, it is produced mainly by symbiotic bacteria in the rumen of ruminants.In present studies the
cellulases producers isolated from fecal matter of deer and elephant by serial dilution technique and
producers are screened on CMC (Carboxy Methyl Cellulose) media.The present work concentrates on the
isolation of cellulose-degrading bacteria from herbivores excreata and assessment of their cellulolytic
activity. The coculturing of cellulose-degrading bacteria and yeast was also carried out for simultaneous
saccharification and fermentation of cellulose into ethanol.