American bullfrogs or African bullfrogs even occasionally prey on small snakes, which are eaten by lizards, insects, small rodents and fish and can be digested. The liver, pancreas and intestine of bullfrog are relatively developed, so its digestive ability is relatively strong.

Bullfrogs generally feed on invertebrates such as insects, shrimps and crabs and small vertebrates such as small fish, frogs, tadpoles, salamanders, young turtles, snakes and rats. Bullfrogs eat a lot. Tadpoles are the larvae of bullfrogs. Tadpoles generally feed on plankton, algae, rotifers, insect larvae, mosses and aquatic plants.

How do bullfrogs digest food?

1. The bullfrog eats food and swallows it. The food ingested in the body will enter the intestines and stomach of bullfrogs through the esophagus. Bullfrog relies on the mechanical digestive peristalsis of digestive tract and digestive enzymes in digestive juice for digestion.

2. The products of bullfrog digestion include amino acids, glycerol, fatty acids and glucose. Which is soluble in water. These nutrients will be absorbed by the intestinal wall in the small intestine, introduced into the capillaries and lymphatic vessels of the bullfrog, and transported to various body organs of the bullfrog in the form of blood circulation to ensure the growth and development needs of the bullfrog.

3. The undigested food residues in the small intestine of bullfrog will be introduced into the large intestine, and the large intestine will absorb part of the water in the food residues to form the feces of bullfrog, which will be excreted through the cloaca and its opening.