What is the difference between the stone frog, the toad, and the bullfrog? What do they eat and how to tell male from female

The stone frog, because its meat is delicious, grows quickly and is large, is one of the main edible frog species. So do you know what the difference is between it and the toad and the bullfrog? What food does it eat? How do you tell male from female? According to frog family data, the food of young frogs mainly consists of mosquitoes, small insects and insect larvae, and so on; by the adult frog stage, its food range is very broad, such as insects, centipedes, spiders, millipedes, snails, clams and mussels, shrimp, crabs, miscellaneous fish, loaches, as well as earthworms, young snakes, small birds, and so on.

What is the difference between the stone frog, the toad, and the bullfrog?

Different family and genus:

1. Stone frog: The stone frog is an amphibian of the animal kingdom, phylum Chordata, subphylum Vertebrata, class Amphibia, subclass Lissamphibia, order Anura, family Ranidae, tribe Paini, genus Quasipaa.

2. Bullfrog: The bullfrog is an aquatic animal of the animal kingdom, phylum Chordata, subphylum Vertebrata, class Amphibia, subclass Lissamphibia, order Anura, suborder Neobatrachia, family Ranidae, genus Rana.

3. Toad: The toad is an amphibian of the animal kingdom, phylum Chordata, subphylum Vertebrata, class Amphibia, subclass Lissamphibia, order Anura, family Bufonidae, genus Bufo.

Different alternative names:

1. Stone frog: The stone frog is also known as stone clam, stone chicken, mountain chicken, stone jelly, flying fish, stone scale, stone toad, stone shrimp toad, stone pit frog, stone luan, mu huai (southern Sichuan), and so on. It is widely distributed in our region, especially in the mountainous areas of Jinggangshan, Ninggang and Anfu in the west, where numbers are large, and it is distributed in Hubei, Anhui, Jiangsu, Zhejiang, Jiangxi, Hunan, Fujian, Guangdong, Hong Kong, China and Guangxi, and other places.

2. Toad: The toad is also known as scabies toad, warty toad, toad, scabies thorn, scabies lump treasure, and so on. It is distributed throughout our country. From late spring to late autumn, during the day it mostly hides among grass and crops, or under stones and in earthen holes around houses and in dry land, and at dusk it often crawls along roadsides and on grass searching for food.

3. Bullfrog: The bullfrog is also known as the American bullfrog. It originated in several eastern states of the United States, and was later introduced to western states and other countries. In 1959 it was introduced to our inland areas from Cuba and Japan. At present, our country mainly relies on farming for production, and it is produced throughout the country, mainly concentrated in Hunan, Jiangxi, Xinjiang, Sichuan, Hubei, and other places.

Different morphology:

1. Stone frog: The stone frog is large and stout, with a body shape similar to the black-spotted frog or the tiger frog. Its body color varies. The head is flat and broad, the snout tip is bluntly rounded and protrudes beyond the lower jaw, the trunk is relatively short and flat, there is no tail, and the neck is not obvious. The male frog has special forelimbs, and the back has narrow long warts of varying length. The belly is pale yellowish white. The forelimbs of the female are less developed than those of the male, there are no narrow long warts on the back, and the ventral surface is smooth and white.

2. Toad: The toad's head width is greater than its head length, the snout tip is round, the snout ridge is prominent, the cheeks slant outward, the internasal space is slightly smaller than the interorbital space, the upper eyelid is wide and slightly larger than the interorbital space, the tympanum is prominent and oval, the forelimbs are thick and short, the body is obese, the hindlimbs are short, and the foot is longer than the tibia. The skin of the male is rough, with warts of unequal size densely covering the head, upper eyelids and back; the female has fewer warts, and the ventral surface is milky white.

2. Bullfrog: The bullfrog has a broad flat head, a terminal mouth, a snout tip that is pointed-round on the face and blunt, protruding eyeballs, a slightly rough back with fine skin ridges, thick and strong limbs, short forelimbs without webbing, and relatively long and large hindlimbs with webbing between the toes. Its skin color changes with the living environment; usually the back and limbs are greenish brown, the back has dark brown markings, the head and mouth margin are bright green, and the ventral surface is white. The color below the throat varies with sex: females are mostly white, gray or dark gray, while males are golden yellow, and the call is very loud.

Different effects:

1. Stone frog: Stone frog meat is sweet in taste and neutral in nature, rich in protein, calcium and other components, low in fat, easy to digest, and very high in nutritional value. Eating it has the effects of clearing internal heat, improving eyesight, resolving sores, and nourishing and strengthening the body.

2. Bullfrog: Bullfrog meat is sweet in taste and warm in nature; the gallbladder is cold in nature and bitter in taste. Regular consumption can tonify the middle and boost qi, strengthen yang and promote urination, invigorate blood and dissolve accumulations, clear heat and detoxify, and tonify deficiency and relieve cough, among other effects.

3. Toad: The toad is pungent in taste, cool in nature, and toxic. It enters the heart, liver, spleen and lung meridians, and has the effects of breaking up masses, moving water and dampness, resolving toxins, killing parasites, and relieving pain. It mainly treats boils, carbuncles on the back, deep-rooted yin abscesses and scrofula, malignant sores, abdominal masses and accumulations, distention, edema, infantile malnutrition, chronic bronchitis, and other conditions.

How do you tell male from female in the stone frog?

The male frog has warts and spines of various sizes on its chest; the forearms are extremely thick and strong; the original thumb and the inner 3 fingers have black conical spines; it has a single subgular internal vocal sac, and the vocal sac opening is in the form of a long slit; it has a male line, purplish red.

The male frog's body length is 123mm, and the female frog's body length is about 131mm. The head width is greater than the head length; the snout tip is round and protrudes beyond the lower lip; the snout ridge is not obvious; the cheeks slant slightly outward; the nostrils are located between the snout and the eyes, slightly closer to the eyes; the tympanum is faintly visible; the vomerine teeth are strong, slanting from the inner side of the internal nostrils toward the midline, and the spacing between the rear ends of the tooth rows is narrow; the tongue is oval, with a deep notch at the rear end.