Largest tuatara

Confined entirely to New Zealand, tuataras superficially resemble lizards but in reality are the only living representatives of an otherwise prehistoric order of reptiles called the sphenodontids, which lived alongside the dinosaurs. The largest species of tuatara is the greatly-endangered Brothers Island tuatara (Sphenodon guntheri), which can attain a maximum length of 76 cm (2.49 ft) and a maximum weight of 1.4 kg (3.09 lb).