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At present, there are about 219 species of snakes known in China, and the vast majority of them are non-venomous snakes, and there are only more than 50 kinds of venomous snakes, including 16 kinds of sea snakes (all of which are highly venomous snakes), and there are only 10 kinds of highly venomous snakes in mainland China, which is known as China's "top ten venomous snakes".

In general, China is the country with the most snakes in the world, and it is also one of the countries that consume more snakes.

There are many species of snakes, there are about 3,000 species in the world, and self-venomous snakes account for about 1 6. There are more than 160 species of snakes in our country, of which 47 are poisonous snakes. Listed below are the maximum lengths of the 10 species of non-venomous snakes and the 10 species of venomous snakes commonly found in our country:

Non-venomous snake venomous snake.

Black-browed snake rice five-step snake rice.

Black snake rice green ring sea snake rice.

Mouse snake m cobra m.

King Snake Rice Golden Snake Rice.

Grey Squirrel Snake Rice Silver Krait Rice.

Red Chain Snake Rice Soldering Iron Head Rice.

Jade spotted snake rice bamboo leaf green rice.

Emerald green snake rice pit viper rice.

Tabby snake rice cauliflower soldering iron head rice.

Black Snake Rice Liwen Snake Rice.

The most common is of course the beautiful snake!

Snakes have females and males, in the outer morphology, the difference between the two is not big, but the tail of the male snake is longer, gradually tapering, while the tail base of the female snake is thicker, and the genus is suddenly tapered backwards, and it is not easy to distinguish between thick and thick.

There are also some snakes, and the two sexes are different in appearance. Some males are more distinctly coloured, some males have strong ridges on their dorsal scales, and some males have wart grains of different sizes on the ventral surface of their heads and sides, such as water red chains, lead-colored water snakes and black snakes. As for the python, to distinguish its male and female, you can look at the residual hind limbs, the male is much more prominent than the female.

Snakes reproduce in some ways.

Oviparous and some ovoviparous. Most snakes are egg-born, usually laying their eggs in shallow holes, dead trees, or tree stumps.

DAO. Generally speaking, snakes lay about 10 eggs at a time, and the hatching period is usually two to three months. As for ovoviviparity, the egg does not give birth, but will hatch in the body, and can be laid at least once.

2. Three small snakes.

I have seen it for a long time. It turns out that it can lay eggs and give birth to small snakes.

No. , Snakes are hermaphroditic, don't think that you have to ** to give birth to baby snakes.

The tail is long in males, relatively short in males, and the tails in males look long, but there is actually a reason for this, because they are close to the tail.

There's Tintin hidden in the place! The subject can do an experiment, catch a male snake, hold the snake from the end of its abdomen, and gently press it down with his thumb (not too light, don't pinch it), and grind it down, and its dings will come out.

The corn snake I raised was relatively small at the time, and I couldn't quite see it by looking at the tail, so I experimented with it, but the one I raised found to be a female, and the experiment failed!

Snake people often rely on their own judgment and do not communicate with other people in a heart-to-heart manner. By nature, snake people are suspicious, but unlike tiger people, snake people hide their suspicions in their hearts and hide their secrets in their hearts.

Oviparous are: king cobra, black snake, krait, silver krait, taipan snake, ball python, corn snake, black mamba snake and so on.

The viviparities are: short-tailed viper, cauliflower spearhead viper, red-spotted cobra, death snake, long-snouted sea snake, mountain viper, saw-scale viper and so on.

Introduction of partial oviparous and viviparous snakes:

1. King cobra.

King cobra (ophiophagus hannah) is also known as mountain snake, mountain peak, large flat-necked snake, large cobra, big flat-headed wind, flat-necked snake, large bulging neck, blowing snake, mountain mark, etc. Oviparous, spawning in June, the number of eggs laid can reach 51, the diameter of the eggs. Build nests with fallen leaves and dead branches.

Female snakes have the habit of protecting their eggs, guarding their nests and waiting for the baby snakes to hatch.

The king cobra, like other cobras, raises the first third of its body when it is in danger, and then it opens its mouth, baring its fangs, and keeps an eye on its surroundings while staring at its opponents. As soon as the king cobra thinks it is in danger, it does not hesitate to attack.

2. Black snake.

The female snake lays 7-30 eggs between July and August, and the incubation period is 45-50 days. The female snake accounts for 51% of the male and female ratio, and the fertilized eggs account for the number of eggs laid, with a natural hatching rate and a natural survival rate of 30%.

The snake mainly lives in hilly areas and feeds on frogs (staple food), lizards, fish, rodents, etc. Due to habitat destruction and large-scale human hunting, the number of people living in the wild has been greatly reduced, and protection is urgently needed.

3. Silver krait.

The white rings are narrow, the tail is slender, the body length is 1,000-1,800 mm, and the venomous snake has anterior groove teeth. Oviparous, spawning in May-June, 6-14 eggs under rotten leaves or in burrows. The incubation period is about 48 days.

Female snakes have a habit of protecting their eggs.

4. Short-tailed pit viper.

The body of the short-tailed pit is short and thick, the head is slightly triangular, distinctly distinguished from the neck, the snout ridge is obvious, the tail is short, and the tubule teeth are present; There are buccal fossa. The head and dorsal surface are dark brown, the ventral surface of the body is grayish-white, and the tip of the tail is brownish-black.

The total length of the newborn baby snake is 140-170mm. The litter is mostly between 2 and 7 a.m. The whole farrowing process takes 30min (4 litters) to 75min (8-10 litters).

5. Cauliflower original spearhead pit pit viper.

The original spearhead pit head of cauliflower is narrow and long, triangular, with obvious snout ridges, and the upper jaw bone has tube teeth, which is a venomous snake with cheek sockets. The back is black and yellow. It mostly lives in mountains or plateaus at higher altitudes, often inhabits barren lawns, cultivated land, roadside grass, rocky piles or under shrubs, and is also found in grass near streams and ravines or on dry tree branches.

The type of origin of this species is in Assam, India.

Ovoviviparous snakes: red-tailed green bamboo silk, death snake, long-snouted sea snake, mountain viper, saw-scale viper.

Oviparous snakes: Snakes, pythons, blind snakes, and cobras.

Ovoviviparity refers to the meaning of "incubating eggs in the body", that is, the fertilized eggs produced by fertilization in the animal remain in the reproductive tract of the mother, and develop into larvae through the vitelline of the egg itself, until the embryo is fully developed. Once mature, the mother's reproductive tract will contract to excrete the larvae and their egg membranes. Therefore, the embryos of ovoviviparous animals are properly protected by the mother, and the hatching survival rate is more secure than that of oviparous animals.

In addition to using the nutrients of the yolk during the development of the fertilized egg, the exchange of gas and the retention of water required for its development are still dependent on the mother**.

Snakes are not viviparous, and the viviparous snakes mentioned by the teacher are all ovoviviparous, not viviparous in the real sense!

Ovoviviparity refers to the direct birth of eggs after hatching in the mother, the embryo can only absorb the nutritional development of protein in the egg during the incubation process, and it will be born directly after hatching, ovoviviparity because it is hatched in the mother with a suitable temperature, so the survival rate is very high, unlike oviparous, after laying eggs, it is not only necessary to rely on natural conditions to hatch but also to prevent natural enemies from preying on eggs, and the survival rate is greatly reduced, so we will see the phenomenon of snakes directly giving birth to small snakes!

Viviparity is the fertilized egg in the mother's body to develop into an embryo, the embryo through the placenta and umbilical cord directly from the mother's nutrient development, after maturity will be born!

Some species of snakes are ovoviviparous, such as vipers, pit vipers, oconitors, corn snakes, etc.

Some snakes are oviparous and some are viviparous.