How do lizards lay and protect their eggs?

Most lizards reproduce by laying eggs, which are typically leathery-shelled and porous to allow for moisture absorption as the embryos develop. While some species are viviparous (giving birth to live young), egg-laying species employ various nesting strategies.123

Nesting and Protection

Lizards generally exhibit minimal parental care, often departing after depositing their eggs. Nesting behaviors range from simply dropping eggs in a suitable location to creating elaborate chambers. Common methods include:43
* Burrowing: Species like the common iguana dig deep burrows, laying eggs at the end and filling the chamber with soil to hide them.3
* Concealment: Many lizards bury eggs under leaf litter or deposit them in tree crevices, caves, or rock crannies.43
* Communal Nesting: Some species, such as certain geckos and South American ground lizards, share nesting sites, with multiple females depositing eggs in the same protected area.43

Parental Care

While rare, some lizards provide active care. Females of species like the five-lined skink remain with their eggs throughout incubation, turning them regularly and retrieving them if they are scattered. Additionally, some species exhibit social behaviors, such as juvenile sleepy lizards remaining within their mother's home range for survival advantages.4