chordata
great white (carcharadon)
After the shark takes a bite out of its prey and swallows it whole, the pharynx moves the food from the mouth to the esophagus. The esophagus then moves the food from the pharynx to the stomach. The stomach then digests the food and the and the liver stores the fatty reserves and energy.
Snake (serpentes)
The snake's digestion begins by putting the prey into its buccal cavity where salivary glands moisten the prey up so it would be easier to swallow. Next, the prey enters the very long esophagus which moves the prey into the J- shaped stomach. The stomach digests the prey and it continues to move into the small intestine, where absorption of nutrients and digestion takes place. The food then passes through the large intestine into the cloaca which absorbs water. Lastly, the wast is stored in the rectum and releases by the anus.
frog ( Anura)
First the frog eats its prey and the food goes down the esophagus into the stomach. There it is digested and then goes through the intestine. The liver stores the energy as the gal bladder stores the bile from the liver.