Don't remove the skin of stone frogs. Because the calcium content in the skin of the stone frog is as high as 248mg/100g, much higher than other animal food, so overall the total content of the stone frog is not low, can be used as one of the food people calcium. Stone frogs are a kind of animal in the family of frogs of the amphibian order Anuraptilidae. Stone frogs are large and stout, with adult frogs 10-13 centimeters in length, individually up to 15 centimeters. Its body shape is similar to that of the black spotted frog or tiger frog, and its body color varies. If the back of the stone frog is black, black back with a white center line, in addition there are different types of brownish yellow, dark red, floral, etc., and its body can be divided into the head, trunk and limbs, the neck is not obvious.