How long do snakes live, and are they viviparous or oviparous?

Snakes are reptiles with degenerated limbs, and there are many species; some snakes are venomous and some are not, and they are distributed all over the world. So, how long do snakes live? Are snakes viviparous or oviparous?

1. How long do snakes live?

Different snakes have different lifespans, mainly related to species or living conditions. In general, small snakes live about 2 to 5 years, medium-sized snakes about 5 to 12 years, and large snakes 10 to 20 years; pythons can live 30 to 40 years or even longer. However, in the wild, because their habitat is not very stable, food is sometimes scarce, and natural enemies and diseases cause serious harm, snakes do not live as long as those under captive breeding conditions. Many scientists' experiments have also proved this, so the lifespan of a snake depends on the actual situation.

2. Are snakes viviparous or oviparous?

Snakes are both oviparous and ovoviviparous, depending on the species. Snakes in the family Colubridae are all oviparous, while some snakes in the families Pythonidae, Typhlopidae and Elapidae are oviparous and some are ovoviviparous. Snakes living in cold regions and high mountains are mostly ovoviviparous, such as the boa; this mode of reproduction allows the eggs to remain in the mother's oviduct, so that the developing embryos can maintain the temperature they need without being affected by the changeable external environment. Almost all sea snakes are also ovoviviparous.

3. Ovoviviparous snakes

1. Pit viper

The pit viper is ovoviviparous; the embryos develop inside the female's body, and the young snakes can live independently after birth. Because this mode of reproduction gives the young the best protection, the survival rate of pit vipers is very high. The breeding season of pit vipers is from May to September each year. Each female pit viper can give birth to 2 to 8 young snakes. Newborn snakes are 14 to 19 cm in body length and weigh 21 to 32 grams.

2. Sea snake

Fully aquatic sea snakes are ovoviviparous, giving birth to 3 to 4 young sea snakes 20 to 30 cm long each time. Amphibious sea snakes that can come ashore still remain oviparous, and during the egg-laying season they often gather in groups to lay eggs on fixed islands. Gato Island in the Philippines is one of the islands that sea snakes often visit. For many years, people have carried out commercial snake-catching activities on these islands.

3. Boa

The boa has larger rostral scales at the front, which are horizontally ridged, while the scales toward the rear gradually become smaller. The boa's body is barrel-shaped, with a shorter tail that is rounded at the tip, and its appearance is somewhat like a head that has been injured. Its whole body is brown, and it inhabits deserts and dry areas. The boa is ovoviviparous, mating in water or near water; after 9 months the female gives birth to 18 to 42 young snakes, all relatively long, reaching more than half a meter in length.

The above is the little knowledge compiled by the Tuliu.com editor for you about how long snakes live and whether snakes are oviparous or viviparous. We hope it can help you!