1, the difference in subject classification: frogs, also known as toads, belong to the anuran order, the frog family, the lateral folds of the frog genus, the black-spotted lateral folds of the frog species; bullfrogs, also known as vegetable frogs, belong to the anuran order, the family of frogs, the frog genus, the species of bullfrogs.
2, morphological characteristics of the difference: the frog body can be divided into head, trunk and limbs of three parts. Frogs have four toes on the front feet, five toes on the back feet, and webbing. Frog head on both sides of the two slightly bulging small bags, that is its eardrums. The frog's head is flattened and slightly triangular with a slightly pointed muzzle end. The mouth is broad, transverse, and consists of upper and lower jaws. There is an external nostril at the dorsal front of the upper jaw, and the outer edge of the external nostril has a nasal valve. The eyes are large and prominent, on the right and left sides of the head, with upper and lower eyelids; the lower eyelid has a translucent transient membrane on the inner side. The frog's dorsum is green, smooth, soft, and patterned, and the abdomen is white; adult bullfrogs are generally between 70-170 millimeters in length, with a maximum of more than 200 millimeters, making them one of the largest living frogs. The skin is usually smooth, without dorsal folds, and the muzzle is broadly rounded. The tympanic membrane is about as large as the eye in females and significantly larger than the eye in males. The dorsal fold runs from behind the eye around the top of the tympanic membrane to the axil, especially in males. The fourth toe is very long, and the webbing does not fully reach the end of the toe. Body coloration is often highly variable depending on the region. Dorsal coloration varies from green to brown, but is mostly green. Often with mixed brown spots, sometimes with a gray or brown reticulated pattern. The ventral surface is white, sometimes with gray spots, and on the throat of the adult, there is often a yellow stripe. In addition to this, the bullfrog's call is very loud, and is obviously louder than the frog's from the point of view of imposing. And the eggs of the bullfrog are neither black nor light black.
3, the difference in habits: frogs because of the bare skin, can not effectively prevent the evaporation of water in the body, so they can not live away from the water or humid environment, afraid of drought and cold. So most of them live in tropical and temperate rainy areas, distributed in the cold zone of the species is very small. Frogs often inhabit rivers, ponds and rice paddies, etc., mainly in the grass at the water's edge, and sometimes can also lurk into the water. Most of them are active at night, taking insects as their main food, and also taking some snails, snails, shrimps and small fish. As a child, it can only live in the water, and when it grows up, it can also go to live on land; bullfrogs live in warm climates, inhabiting small lakes, ponds growing with aquatic plants and shallow water made by sediment accumulation, and the shoreline is shaded by shrubs. It survives and reproduces in marshes, lakes and ponds, puddles, riffles, rice paddies, and still waters with abundant water plants. In the bullfrog's recipe, prey on insects, small shrimps, small crabs and other invertebrates, as well as small fish, small frogs, tadpoles, salamanders, young turtles, snakes, rodents and other small vertebrates for food, other frogs and even the young of the waterfowl are their plate food, eat quite a lot. Because of this habit, the bullfrog has the "frog world Tyrannosaurus Rex" title.
4, the distribution range of the difference: frogs: all continents of the world waters, wetlands and other areas; bullfrogs: Sichuan, Chongqing, Guangxi, Hunan, Xinjiang, Yunnan, Zhejiang, Fujian and so on.
5, food value: frog meat is tender, tasty, high nutritional value, high protein, low fat tonic food, individuals are usually small compared to bullfrogs, commonly used as hot pot, marinade and other ingredients; bullfrogs are treasures all over the body, is a set of edible, medicinal and leather used in a large economic frogs. Bullfrog meat is a superior flavorful food and high-level health care medicinal food, which is a kind of healthy food with high protein, low fat and low cholesterol. Individuals are large and generally one of the preferred ingredients for the charcoal grilled frogs we eat.