The oral cavity helps in ingestion, chewing and produces some essential salivary secretions or enzymes that aid in digestion.
The sheep small intestine is the longest among common laboratory animals. Normally there are small tracts, about 12 cm long, whichare empty. This second storage area is about 40-45 cm long with an averagediameter of 3-4 cm.

Any undigested food and all the fiber from the rabbit’s diet will pass from the small intestine to the large intestine. A rabbit's caecum is large, about twice the length of the abdominal cavity and 10 times the capacity of the stomach, 40% of the entire alimentary tract. The small intestine is about 3 meters long and nearly 1 cm … It is folded into four parts that flex upon each other. (i) Small Intestine: It is formed of the following parts: It contains 100-120 g of a uniform pasty mixwith a dry matter content of about 20 percent. Small intestines; Large intestines – cecum and appendix; Rabbit’s digestive system diagram Oral cavity. The small intestine ends at the base of the caecum. This would be in the same place as our appendix, but in the rabbit this organ is very large and contains a wonderfully diverse population of healthy bacteria, yeast, and other organisms working to help the rabbit digest his food.
Ingestion. The mouse small intestinal length is about 35-45 ~rn.~ The diameter of the small intestine in the human is 5 cm (Table 2), in - the pig, 2.5-3.5cm, in the beagle dog, - I.OC~,~ in the Rhesus monkey, The contents of the stomach are gradually ‘injected’ into the small intestine in short bursts, by strong stomach contractions. The large intestine, or colon, is the section that continues from the small intestine to the anus of the animal. In the adult rabbit, large quantities of water and acid are secreted into the gastric fundic lumen. Wild rabbits they eat mainly succulent young shoots using their incisors that are chisel-like.

The intestine of the rabbit is very much coiled and long, nearly 1.2 metres in length, and can be divided into small and large intestines. The adult rabbit’s gastric pH during digestion of food material is maintained between 1 and 2, which destroys most microbial organisms, maintaining an almost sterile stomach and small intestine [8,12]. Rabbits have a very large blind sac called a cecum that is located where the small intestine and the large intestine join together.

Small Intestine If the small intestine of a rabbit was laid out it would be more than 10 times the length of the rabbit. The small intestine is about 20 times longer than the length of the animal - so a cow two metres (6 feet) in length would have a small intestine 40 metres (131 feet) long!