This monograph describes the biology, husbandry, and breeding of Naultinus elegans and Naultinus grayii, two species of endemic New Zealand geckos that are vulnerable to extinction due to the introduction of exotic predators such as mice, cats, stoats, weasels, ferrets, and hedgehogs to New Zealand. At first glance, keeping these geckos in captivity on the other side of the planet may not seem to have anything to do with species conservation. Such efforts, however, are allowing for the establishment of several independent groups that can serve as genetic reservoirs. These animals are isolated from the threats that geckos may suffer in their native country. Keeping them in captivity furthermore aids in developing knowledge of gecko behaviour, biology, and care conditions. This book shares the high levels of expertise behind their care and breeding.