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The viviparous lizard, or common lizard, (Zootoca vivipara, formerly Lacerta vivipara) is a Eurasian lizard.It lives farther north than any other species of non-marine reptile, and is named for the fact that it is viviparous, meaning it gives birth to live young (although they will sometimes lay eggs normally). [3]
Although many kinds of snakes and other reptiles are oviparous (lay eggs), rattlesnakes are ovoviviparous (give birth to live young after carrying eggs inside). [77] The female produces the ova ("eggs") in her ovaries , after which they pass through her body cavity and into one of her two oviducts .
Around 20 percent of lizard species reproduce via viviparity (live birth). This is particularly common in Anguimorphs. Viviparous species give birth to relatively developed young which look like miniature adults. Embryos are nourished via a placenta-like structure. [24] A minority of lizards have parthenogenesis (reproduction from unfertilised ...
A Brazilian rainbow boa constrictor kept at a school in England gave birth to 14 babies last month, despite having no contact with another snake for nearly a decade.
Tiger snakes give birth to 20 to 30 live young; an exceptional record was made of 64 from an eastern female. [8] They usually mate in spring when it is in the warmer seasons and will give birth to live young in summer.
It typically takes Cope's arboreal alligator lizards until the second reproductive season for them to be large and sexually mature enough to reproduce. These lizards are viviparous (they do not lay eggs like many other reptiles), but will give birth to live pups. The mating ritual of this alligator lizard is similar to other lizards, which will ...
Northern Pacific rattlesnakes can give birth from 4 to 21 babies at a time, which explains how Wolf found 59 snake babies living together under the house. The mothers care for the babies for about ...
Vivipary is rare in snakes, but boas and vipers are viviparous, giving birth to live young. [29] Female aphid giving birth. The majority of insects lay eggs but a very few give birth to offspring that are miniature versions of the adult. [18] The aphid has a complex life cycle and during the summer months is able to multiply with great rapidity.