What is the difference between a toad and a bullfrog?
The toad has a stout body, about 10 centimeters long or more, smaller in males. All the skin is extremely rough, except for the top of the head is smooth, the rest of the part, are full of different sizes of round scrofula. The head is broad, the mouth is wide, the muzzle is rounded, and the muzzle ribs are remarkable. There are no teeth in the mouth and no teeth in the upper or lower jaw. There is one pair of small-shaped nostrils near the end of the muzzle. Eyes large and projecting, with rounded tympanic membrane posteriorly. Large, long postauricular glands on each side of the top of the head. Carapace short and broad. During the reproductive season, the male dorsal surface is mostly blackish green with light-colored markings on the side of the body; the female dorsal surface is lighter in color, scrofulous creamy yellow, sometimes with diagonal rows of black longitudinal spots along the side of the body from behind the eyes; the ventral surface is not smooth, creamy yellow, with fine brown or black floral spots. Forelimbs long and stout, digits and toes slightly flattened, fingers slightly ciliated on the lateral side without webbing; length of fingers in the order of 3, 1, 4, 2; subarticular tubercles of the digits mostly in pairs, palmar protuberances of 2, those on the lateral side larger. Hind limbs stout and short, tibiotarsal joints reaching shoulder anteriorly, ciliated on phalanges, webbing still developed, inner metatarsal tubercle long and large, outer metatarsal tubercle small and rounded. Male forelimbs with black married pads on the inner 3 fingers, without vocal sacs. Body length 79-120 millimeters.
The bullfrog's body shape is the same as that of the general frogs, but the individuals are larger, the female frogs are up to 20 centimeters long, the male frogs are 18 centimeters long, and the largest individual can reach more than 2 kilograms. The head is broad and flat. The head is broad and flat. The mouth is terminal and the muzzle is rounded and obtuse. The eyes are protruding, divided into upper and lower parts, and there is a crepeable transient membrane on the lower eyelid, which can close the eyes. Dorsum slightly rough, with fine skin ribs. The limbs are stout, the forelimbs short and without webbing. Individual males have a conspicuous gray verrucous protuberance on the inner side of the first toe. The hind limbs are larger and webbed between the toes. Skin color varies with the living environment, usually greenish brown on the back and limbs, with dark brown markings on the back; bright green on the head and mouth margins; white on the ventral surface; the color under the throat varies with the male and female, with females mostly white, gray, or dark gray, and males golden yellow. It is named after its loud song, which sounds like a cow's bellowing at a distance.
Life Habits of Toad and Bullfrog
Toad prefers to hide in mud holes, under moist stones, in grass and by the side of ditches. The skin is prone to water loss, so it lurks and hides during the day, and comes out at night and dusk. Adult toads are mostly clustered in the mud and sand under the water or under the moist soil on land to overwinter. Stop eating, to the body stored in the liver sugar to maintain the lowest metabolism, to the following year when the temperature rises to 10 ~ 20 ℃, before the end of hibernation. It hunts and moves at night, feeding on beetles, moths, snails, and fly maggots. It is easier to breed in captivity than other frogs.
The bullfrog lives in lakes, ditches, harbors, ponds and other aquatic environments and nearby land, and usually likes to inhabit ditches and ponds. If there are floating plants on the surface of the water, they will be in the water plants, only with their heads exposed to the water surface, and when disturbed, they will dive into the water. Bullfrogs have the characteristic of living in groups, often a few or dozens of **** habitat, to be adapted to the environment, it will not move casually. By early May, the bullfrogs call especially, a frog first, other frogs follow the chorus, the night than the daytime call more powerful, and then they will hold the pair of spawning. The spawning period ends in mid-July and lasts about 70 days. The eggs are flaky and float on the surface of the water by means of water plants. Fertilized eggs hatch into tadpoles that live in the water and later metamorphose into frogs. They live an amphibious life. When the water temperature drops to about 10℃ in winter, the bullfrogs start to hide in caves or silt and stop their activities and feeding. But when the temperature rises above 10℃, they come out again to forage for food, even in winter, so the bullfrogs have no obvious dormant period in the Dongting Lake area.
Distribution of toads and bullfrogs
Toads are widely distributed throughout the world outside of Oceania and Madagascar.
The bullfrog is native to North America along the Rocky Mountains and several eastern states of the United States, and has since been introduced to western states and other countries. At present, China mainly relies on aquaculture production, produced throughout the country, mainly concentrated in Hunan, Jiangxi, Xinjiang, Sichuan, Hubei and other places. You can choose HDPE geomembrane for the seepage control of the breeding site. Commercial frogs are mainly in the fall and winter, the supply source is mainly from Guangdong, Fujian area.
Because the toad and bullfrog are too similar, so there are people who buy the toad back because they are confused and can't tell the difference. Because toad is poisonous, so we must pay attention when picking bullfrogs, do not pick the poisonous toad, or it is easy to cause poisoning in the process of consumption.
The above is a summary of the knowledge about the difference between toad and bullfrog, I hope it will help you.