Frogs, also known as frogs, toads, etc., are animals of the genus Frogs, family Frogidae lateral folds frogs, there are more than 6,000 species in the world, to insects and other invertebrates as the main food, often inhabited in rivers, ponds and rice paddies, etc., to be in the grass at the edge of the water activities, and sometimes lurking into the water.

There are about 130 species of frogs in China, almost all of which are capable of destroying forest and farmland pests.

So what kind of animal is a frog? What are the common species? Frogs, also known as frogs, toads, etc., is the frog family side of the folds of the frog genus, there are more than 6,000 species in the world to insects and other invertebrates as a staple food, often inhabiting the rivers, ponds and rice paddies, etc., to be in the water in the grass activities, and sometimes lurk into the water.

There are about 130 species of frogs in China, almost all of which are capable of destroying forest and farmland pests.

So what kind of animal is a frog? What are the common species?

I. What kind of animal is a frog?

Frogs belong to the chordata, amphibians, anurans, frogs, amphibians, the head is flat, slightly pointed at the end of the muzzle; mouth wide, consisting of the upper and lower jaws; eyes large and prominent, born in the head of the left and right sides.

The carapace is short and wide, and there is a small hole for the cloacal aperture between the legs at the posterior end of the carapace, favoring the dorsal side.

The forelimbs are short, consisting of five parts: upper arm, forearm, wrist, palm, and finger, and the hind limbs are long and well developed, with webbing between the toes.

Adult frogs are tailless, eggs are laid in the water, fertilized in vitro, hatch into tadpoles, and breathe through gills, and after mutation, adults breathe mainly through the lungs and also through the skin.

Two common species of frogs

1, black spotted frog

Black spotted frog body length of about 70-80 millimeters, males are slightly smaller, the head length is slightly larger than the head width, the kiss is bluntly rounded and slightly pointed, the kiss prongs are not obvious, the distance between the eyes is very narrow, the forelimbs are short, batch of bluntly pointed end, the hind limbs are shorter and plump, the tibial joints in front of the eye, between the toes is almost fully webbed, adult frogs are often found in the rice paddies, ponds and ponds, lakes and rivers, or near the waters.

2, ze land frog

Ze land frog, also known as ze frog, for the forked tongue frog family land frog genus of amphibians, commonly found in the fields and ponds and hills, the external shape of the tiger frog and the body shape is small, the body length of 50-55 millimeters, is widely distributed in Japan and Southeast Asia, in China, distributed in the south of the Qinling Mountains of the plains and hills, the elevation of 2,000 meters of the mountainous areas also have a distribution.

3, the golden line frog

Golden line frogs, including the golden line side of the fold frog, Fujian side of the fold frog, Hubei side of the fold frog three species, belongs to the amphibian family Frogidae side of the fold frogs genus, China's widely distributed endemic species, the body fat, adult body length of about 50 millimeters, the male body is slightly smaller, mainly distributed in the eastern region of China, China's one of the common frogs, but also China's economic value of the larger frogs resources.

4, bullfrog

The bullfrog is named for its call is big and bright like a bull, the largest frogs in North America, large and stout, adult frogs body length of 20 centimeters, weighing up to 1 kilogram.

The skin is rough, the back of the body is greenish brown with dark brown markings, the abdomen is grayish white, and the male frog has a yellowish skin on the pharynx.