What does frog mean?

frog English/fr?ɡ/American/frɑ?ɡ/n. frog; frog; Frenchman (a contemptuous name for the French) plural: frogs

Frog is a member of the family Ranaidae An amphibian of the genus Rana, its head is slightly triangular, longer than wide; its eyes are large and protruding, its forelimbs are short, its fingers and toes are blunt and pointed, its hind limbs are shorter and thicker, and the toes are mostly fully webbed; its back is rough, Sometimes blue-green, yellow-green, dark green, gray-green, gray-brown, etc., with irregular black spots, and the skin on the ventral surface is white, smooth, and spot-free.

Frogs are most common and abundant in the plains and hilly areas from North China to South China.

It is also distributed in Japan, the Korean Peninsula, Russia and other places. Frogs are suitable for living in amphibious environments. They mostly inhabit low-lying, moist places such as rivers, ponds, streams, ditches, lakes, shoals and other overgrown aquatic plants. They lie dormant during the day and emerge at night. At night, they move around in search of food.

Both juvenile and adult frogs are carnivorous, generally preying on rice pests such as locusts, rice borers, rice cicadas, rice bugs, mole crickets, chafers, butterfly moths, dragonflies, beetles, as well as earthworms and mealworms , fly maggots, small fish and shrimps, etc., can also swallow fish meat and internal organs of chicken, duck, and fish.

The egg-laying period is from March to June. Life span is 5 to 15 years.

The whole frog can be used as medicine. It has diuretic, swelling, detoxification and cough-relieving effects; it is mainly used to treat edema, asthma and cough, measles, menorrhagia and other diseases; its meat is tender, nutritious, delicious and low in fat and sugar. are both low and are better green foods and tonics. Frog skin can also be used to make high-end gloves, wallets, elastic ties, leather shoes, scabbards and high-end musical instrument accessories. The head and viscera can be dried and crushed to be made into animal feed

Morphological characteristics

The frog body can be divided into 3 parts: head, trunk and limbs. Frogs have four toes on their front feet and five toes on their hind feet, as well as webbed feet. There are two slightly bulging bags on both sides of the frog's head, which are its eardrums through which the frog can hear sounds. The frog's back is green, smooth, soft, and patterned.

The belly is white, which allows it to hide in the grass, making it easier to catch pests and protect itself.

Its skin also helps it breathe. Its air sac is only found in male frogs. Frogs can reach 20 cm in length. Its mooing sound is very similar to the braying of a cow. The frog is light and thin, with suckers on its fingertips. Frog Head The frog's head is flat, slightly triangular, with a slightly pointed snout. The mouth is wide, with transverse clefts, and is composed of upper and lower jaws.

There is a pair of external nostrils at the front end of the dorsal side of the maxilla, and there is a nasal valve on the outer edge of the external nostrils.

The eyes are large and protruding, located on the left and right sides of the head, with upper and lower eyelids; there is a semi-transparent nictitating membrane on the inside of the lower eyelid. When the eyelids are closed, the position of the eyeballs changes, and there is a round tympanic membrane behind each eye (the tympanic membrane of a toad is smaller, and there is a pair of oval-shaped protrusions called retroauricular glands, or venom glands, behind the eyes and the tympanic membrane).

There is a light brown membrane fold in the back of the mouth corner of the male frog, which is the vocal sac, which bulges into a bubble shape when singing. The trunk of the frog is followed by the tympanic membrane. The trunk of the frog is short and wide. There is a small hole on the dorsal side between the legs at the rear end of the trunk, which is the cloacal hole. The back is rough, blue-green, yellow-green, dark green, gray-green, gray-brown, etc. in life, with irregular black spots.