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Lizard reproductive strategies vary; they may be:
Lizard reproductive strategies vary; they may be:
* oviparous
* oviparous - laying eggs
* ovoviviparous - the eggs are retained within the female until birth
* ovoviviparous - the eggs are retained within the female until birth
* viviparous - with a placental type of circulatory connection
* viviparous - with a placental type of circulatory connection
* parthenogenic - asexual reproduction found in lizards such as certain ''Lacerta'' spp. and Aspidocelis (''Cnemidophorus'') spp. consisting entirely of females.
* parthenogenic - asexual reproduction found in lizards such as certain ''Lacerta'' spp. and whiptail lizards (Aspidocelis [''Cnemidophorus''] spp.) consisting entirely of females. Although they reproduce asexually, these females still show courting and pseudocopulation.
Parthenogenesis has been reported in about 30 species of lizards.
==References==
==References==
* Mader, D.R. (2005). ''Reptile Medicine and Surgery''. Saunders. pp. 1264. ISBN 072169327X
* Mader, D.R. (2005). ''Reptile Medicine and Surgery''. Saunders. pp. 1264. ISBN 072169327X