Tuatara

Sphenodon punctatus

The tuatara, Sphenodon punctatus, is a reptile endemic to New Zealand and the only living representative of the ancient order Rhynchocephalia. Although it looks superficially like a lizard, it differs in skull structure, teeth, metabolism, and reproductive biology. Tuatara have olive, gray, or brown skin, a spiny crest along the back and tail, and a light-sensitive parietal eye that is most visible in hatchlings. They are long-lived, slow to mature, and adapted to cool coastal conditions, feeding mainly on weta, beetles, spiders, other invertebrates, and occasionally small lizards or seabird eggs and chicks.

Private ownership is not an option; tuatara are strictly protected and managed through New Zealand conservation agencies, iwi partners, offshore islands, fenced sanctuaries, and a small number of permitted zoological institutions. Conservation work emphasizes keeping rats and other introduced predators away from nesting sites, moving animals to secure habitats, and monitoring genetics in small populations. Incubation temperature affects sex, so climate warming is a practical management concern rather than an abstract issue. Facilities caring for tuatara use cool, secure enclosures with deep retreats and minimal disturbance, reflecting the species' slow pace and high conservation value.