There are several species of frogs in the world, and how many species of frogs are there in the worl

There are more than 6,000 species of frogs in the world, and there are about 130 species in China.

Among the many frogs, the black spotted frog is widely distributed and more numerous, followed by the frog, the golden frog, and the tiger mosquito frog. Generally, most of the farmed frogs are black spotted frogs and tiger frogs.

The vast majority of frogs are small, with short bodies and no necks; Frogs do not have tails and have large, flattened heads, bulging eyes, and small snouts that grow on the top of their heads. Frogs have longer hind legs than front legs, four fingers on the forelimbs and five fingers on the hind limbs; The frog has a damp and smooth appearance, and the toad has a rough **; Frogs can change their body color and size.

There are about 190 species of frogs. Among them, the black spotted frog is widely distributed and more numerous, followed by the Ze frog, the money frog, the tiger mosquito frog, the forest frog, the horned frog, the bullfrog, the bearded frog, the Emei tree frog, the piano frog, the flying frog, the spotted leg tree frog, the floating frog, the Ji frog, the flower-backed toad, as well as the rain frog and the turbulent frog. Supata Golden Frog.

Red Frog, Narrow-mouthed Frog, Pangu Toad, Brown Tree Frog, Miantian Tree Frog, Zhuluo Tree Frog, Orange-bellied Tree Frog, Mohs Tree Frog, Emerald Tree Frog, Taipei Tree Frog, Chinese Tree Toad, Gongde Red Frog, Swenhao Red Frog, Gu Red Frog, Laduhi Red Frog, Belly Spotted Frog, Little Rain Frog.

There are 73 species of arthropodidae, distributed in the Sahara Desert region of Africa, small to medium-sized terrestrial frogs, directly developed.

Reed frogs, 225 species, distributed in Africa, small to medium-sized arboreal species, tadpoles are waterborne.

There are more than 6,000 species of frogs in the world, and about 130 species in China.

Frogs (frogs) belong to the phylum Chordates, amphibians, anceridae, and amphibians of the frog family, adults without tails, eggs laid in water, fertilized in vitro, hatched into tadpoles, respiration with gills, after mutation, adults mainly use lung breathing, and also use ** breathing. The vast majority of frogs reproduce through in vitro fertilization, and the fertilized eggs hatch into tadpoles outside the mother's body.

Globally, only 10 to 12 species of frogs have evolved to fertilize in vivo, and some of them will release fertilized eggs from their bodies to hatch into tadpoles. But frogs are zoological to refer specifically to the black spotted lateral fold frog. Frogs have long been thought to be oviparous, but scientists have found that a species of frog that lives in the rainforests of Sulawesi, Indonesia, is capable of laying tadpoles.

This frog is the only one of the more than 6,000 species of frogs in the world that is capable of "laying tadpoles".

Frogs are slimmer and are more good swimmers. The neck is inconspicuous and has no ribs. The ulna of the forelimbs heals with the radius, and the tibia of the hind limbs heals with the fibula, so the claws cannot rotate flexibly, but the limbs are muscular.

The most primitive frogs began to evolve in the early Triassic. The first frogs to jump appeared in the Jurassic period. Because frogs feed on insects and other invertebrates, they must live near water.

There are about 130 species of frogs in China, and almost all of them are experts at eradicating pests in forests and farmlands.