How can you tell the difference between a frog and a toad? What is the difference between a frog and

1 Compare** and body color.

The frog has 2 longitudinal folds from the back of the eyes to the base of the hind limbs, which are golden yellow or light brown in color. **There is a light longitudinal stripe. There are many horizontal rows of black markings on the hind limbs.

The frog has a brown or yellowish-green back and a white ventral surface. The toad ** is rough, and the whole body is densely covered with wart-like protrusions of various sizes. The back is dark brown, and the ventral surface is creamy yellow.

2 Observe the venom glands Toads have abundant venom glands, which are divided into ** glands and postauricular glands. **The glands are distributed on the back of the body, and the epidermis where they are located is partially thickened into "verrucous grains". The posterior ear gland is above the tympanic membrane on the cephalic side.

Carefully prick the posterior ear gland with a needle, and a milky white and toxic serous fluid will flow. Frogs do not have venom glands.

3 Observe the vocal sacs There is a pair of vocal sacs behind the corners of the mouth of the male frog, and when vocalization, the gas in the mouth is pressed into the vocal sac, making it expand into a ball, and the female frog does not have a vocal sac. Toads, on the other hand, do not have vocal sacs in both sexes and males.

4 Compare teeth and tongue.

The frog has a row of tiny maxillary teeth on the maxillary margin; There are also two rows of small nodulous protrusions on the vomer at the top of the mouth, called vomer teeth. Whereas toads have no teeth in their upper and lower jaws. Pull out the frog's tongue, the tip of which is forked; And the tip of the tongue of the toad is not forked.

5 Observe the connection between the ureter and the cloaca The frog's two ureters are connected to the cloaca respectively, and there are two openings in the cloaca wall; The toad's two ureters merge into a single ureter and then enter the cloaca, which has only one opening in the cloaca wall.

6 Observe the connection between the fallopian tube and the cloaca The frog's two oviducts are also connected to the cloaca; The toad, on the other hand, merges first and then communicates with the cloaca.

7 Compare shoulder straps.

The two upper black rostral bones of the frog are closely parallel and not overlapping, and cannot be staggered, which is called a chest-fixing shoulder girdle; On the other hand, the upper black rostral bones on both sides of the toad overlap each other and can move staggeredly, which is called the curved chest shoulder girdle. In front of the inner end of the frog's two clavicles, there is a club-shaped shoulder sternum, and in front of the shoulder sternum there is also a semi-round cartilage, which is the upper sternum. Toads, on the other hand, do not have these two bones.

8 Comparing vertebral bodies The first 7 vertebral bodies of frogs are all cylindrical, with the anterior end concave and the posterior end convex, which is called the anterior concave type, while the 8th vertebral body is biconcave. The first 8 vertebrae of the toad are all anteriorly concave.

Toads have keratinized epidermis, so they are drought tolerant and can move in dry environments far from water. Although the body color of frogs and toads is different, they are protective in different living environments, and they are greatly affected by the environment. The toad's ability to jump is much less than that of a frog, but the venom glands protect it to a certain extent from being swallowed by predators, and these organs are protective organs.

The male frog has a pair of vocal sacs, which are the resonators of vocalization. The maxillary teeth of frogs are all homogeneous, and these teeth do not have a chewing function, but only prevent small animals from slipping out of their mouths. The presence or absence of teeth and the location of the teeth, whether the tip of the tongue is bifurcated, and the type of shoulder girdle and vertebral body are all the basis for the classification of tailless amphibians.

The difference in the way the ureters and fallopian tubes connect to the cloaca in frogs and toads is often overlooked in anatomy.

Frogs and toads look somewhat alike, but there are also big differences. First of all, they have a lot of differences in appearance, such as different **, color, and body type. Frogs and toads are also different in their behavioral habits.

For example, frogs live mainly near water sources, while toads can live farther away from water sources. Frogs also tend to jump higher than toads. Just by looking closely at the details, you will be able to distinguish between the two animals.

Difference Between Frog and Toad: Different Families, Different Tadpoles, Different Morphology.

First, the families are different.

Frog. Frogs are amphibians of the kingdom Animalia, Chordates, Subphylum Vertebrates, Amphibians, Tailless, Neofrogs, Forktongue Frogs, and Tiger Frogs.

Toad. Toads are the kingdom Animalia, the phylum Chordates, the subphylum Vertebrates, the Amphibians, the Slippery subclass, the Tailless order, the Toad family, and the toad genus Amphibians.

Second, tadpoles are different.

Frog. The tadpoles of frogs are mostly scattered, with a lighter body color, a slightly rounded body, a long tail, and a long mouth at the front of the head.

Toad. The tadpoles of the toad are usually densely packed, with a black body and a shallow tail, an oval shape, a short tail, and a mouth on the ventral surface of the front of the head, which is smaller than the size of the frog tadpole.

Third, the form is different.

Frog. The head of Qingzhen Xiaojiao frog is flattened, slightly triangular, the snout end is slightly pointed, the mouth is wide, transversely lobed, composed of upper and lower jaws, there is a light brown membranous fold for the vocal sac in the inner and rear corners of the mouth of the male frog, bulging into a bubble when chirping, the trunk is short and wide, between the two legs at the back end, there is a small hole on the dorsal side, which is a cloaca hole, there are four toes on the feet, five toes on the hind feet, and webbing.

Toad. There are many pimples on the body surface of the toad, with venomous glands inside, the average body length is about 60 mm, the largest female can reach 80 mm, the width of the head is greater than the length of the head, the snout is rounded, the snout edge is prominent, the cheeks are inclined outward, the nasal distance is slightly smaller than the eye distance, and the upper eyelid is wide and slightly larger than the eye distance.

The tympanic membrane is prominent, oval, rough in males, densely covered with warts of unequal size on the head, upper eyelids and back, and fewer warts in females, and large and flattened glands behind the ears.