When horses eat, the food is swallowed and passes down the esophagus into the stomach. There is a strong band of muscle called the cardiac sphincter around the esophagus at the stomach entrance. While all mammals have the cardiac sphincter which is a valve, it is different in horses for these reasons. It is extremely […]
Dogs have 2 anal sacs located on either side of the anus. Anal sacs in dogs are similar to the scent glands of skunks. While skunks use their scent for defense, dogs mark their territory when defecating with secretions from the anal sacs. There is a strong odor emitted from the sacs. When dogs smell […]
