I. Different Morphological Characteristics

1. Bullfrogs: The adult body length is generally between 70-170 millimeters, and the maximum can be more than 200 millimeters, which is one of the largest living frogs. The skin is usually smooth, without dorsal folds, and the muzzle is broad and rounded. The tympanum of females is about as large as the eye, while that of males is significantly larger than the eye.

2, frogs: frogs flat head, slightly triangular, the end of the muzzle slightly pointed. The mouth is wide and transverse, consisting 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. Eyes large and prominent, on right and left sides of head, with upper and lower eyelids; lower eyelid with a translucent transient membrane on the inner side.

3, field frogs: male frogs body length 25~27mm, female frogs body length 29~34mm, head length slightly larger than the head width, the end of the muzzle blunt and pointed, protruding from the edge of the lower lip, the tympanum is slightly larger than the third finger suction cups, closer to the eyes, no plow bone teeth.

Second, the habitat is different

1, bullfrogs: small lakes, permanent ponds. Lakes and ponds have aquatic plants and shallow areas made of sediment accumulation, and the shores are shaded by shrubs.

2, frogs: due to the bare skin, can not effectively prevent the evaporation of water in the body, so they can not live their lives away from water or humid environment, afraid of drought and cold. So most of them live in the tropical and temperate rainy areas, distributed in the cold zone of the species is very small. When they are young, they can only live in the water, and when they grow up, they can also live on land.

3, field fowl: living at an altitude of 900m below the rice paddies, ditches, ponds, reservoirs, marshes and other places with water, its habitat with the foraging, breeding, overwintering and other different life periods and change.

Three, the distribution range is different

1, bullfrogs: Sichuan, Chongqing, Guangxi, Hunan, Xinjiang, Yunnan, Zhejiang, Fujian and so on.

2. Frogs: waters, wetlands and other areas in all continents of the world.

3, field fowl: Henan, Shaanxi, Sichuan, Yunnan, Guizhou, Hubei, Anhui, Jiangsu, Zhejiang, Jiangxi, Hunan, Fujian, Taiwan, Guangdong, Hainan, Guangxi and Hong Kong, etc. are distributed, but also found abroad in Burma, Thailand, Vietnam and Malaysia and other regions.

Baidu Encyclopedia - Tiger Frog

Baidu Encyclopedia - Frog

Baidu Encyclopedia - Bullfrog