Frog has a few legs right Frogs have several legs

Frogs have 4 legs.

Frogs have 4 legs. Forelimbs: short, composed of 5 parts: upper arm, forearm, wrist, palm, fingers, etc.; Forelimbs have 4 toes, without webbing between fingers; During the reproductive season, there is a bulging protrusion on the inside of the base of the first finger of the male frog, which is used for holding the pair.

Hind limbs: long and developed, divided into 5 parts, such as thigh, tibia, tarsus, plantar and toe; hind limbs with 5 toes webbed between toes; There is a stiffer keratinized distance on the inside of the first toe.

Introduction to frogs

Frogs belong to the phylum Chordates.

Amphibians, anceridae, and frog family amphibians, adults without tails, eggs laid in water, fertilized in vitro, hatched into tadpoles, respiration with gills, after mutation, adults mainly use lung respiration, 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 always been thought to be oviparous, but scientists have found that one lives in Indonesia.

Frogs in the rainforests of Sulawesi are able to give birth to 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 and radius of the forelimbs.

Healing, tibia and fibula of the hind limbs.

heals, so the claws do not 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 are known to insects and other invertebrates.

It is a staple food, so it must inhabit the water's edge. There are about 130 species of frogs in China, and almost all of them are experts at eradicating pests in forests and farmlands.

An adult frog has 4 legs.

Frogs often inhabit rivers, ponds, and rice paddies, and are mainly found in the grass near the water, but sometimes they can also lurk in the water. Most of them are active at night, eating insects as their staple food, and also eating some snails, snails, small shrimp, small fish, etc.

The smallest frog is only 5 centimeters, which is about the length of a person's thumb, and the largest is 30 centimeters (more than a foot long), with a short and broad body and strong hind limbs. The pupils are all horizontal, smooth, the tip of the tongue is bifurcated, the tongue follows the front of the mouth, and it is long back into the mouth upside down, and it can suddenly turn out to catch insects.

Aquatic animals generally rely on the oscillation of the back of their bodies to generate forward momentum. For example, the fish moves forward by the tail fin, and the other fins only play the role of adjusting the posture and direction of movement. Similarly, tadpoles are also tail-moving.

The hind limbs of the frog are detached from the tail and are powerful aquatic locomotor organs. Frogs are also going to land in the event. Because his hind limbs are strong and his forelimbs are weak, jumping is the fastest way to exercise on land. Of course, he can also crawl slowly on all four legs.

Toads are more active on land, have reduced mobility in the water, and are not as powerful as frogs on their hind limbs. So toads are often seen crawling instead of jumping.

It is precisely because of the developed and powerful hind limbs of frogs that they are unfortunately coveted by humans, so there is the "delicacy" of chicken legs!

The frog has four legs correctly. The frog's forelimbs are short, consisting of five parts, including upper arms, forearms, wrists, palms, and fingers, and the forelimbs have four toes and no webbing between the fingers. During the reproductive season, there is a bulging protrusion on the inside of the base of the first finger of the male frog, which is used to hold the pair.

The hind limbs are long and well-developed, divided into five parts: femoral, tibial, tarsus, metatarsal, and toe, and the hind limbs have five toes, webbed between the toes, and there is a harder keratinized distance on the inside of the first toe. <

The frog has four legs correctly. The frog's forelimbs are short, consisting of five parts, including upper arms, forearms, wrists, palms, and fingers, and the forelimbs are accompanied by four toe tracks, and there are no webbing between the fingers. During the reproductive season, there is a bulging protrusion on the inside of the base of the first finger of the male frog, which is used for holding the pair.

The hind limbs are long and well-developed, divided into five parts: femoral, tibial, tarsus, metatarsal, and toe, and the hind limbs have five toes, webbed between the toes, and there is a harder keratinized distance on the inside of the first toe.