1. Merriam-Webster, 2021. Ruminate. Available: https://www.merriam-webster.com/dictionary/ruminate#learn-more2021
2. [Central control of rumination];RUCKEBUSCH;Ann Nutr Aliment,1961
3. Ingestion and mastication of feed by dairy cattle;Beauchemin;Veterinary Clinics of North America: Food Animal Practice,1991
4. Chewing activities and oesophageal motility during feed intake, rumination and eructation in camels;Engelhardt;J Comp Physiol B,2006
5. The efficiency of chewing during eating and ruminating in goats and sheep