Tuatara

Tuatara is a reptile native to New Zealand and is the only surviving member of the order Sphenodontia. They are known for their unique features, such as their third eye, which is located on the top of their head and helps regulate their circadian rhythm.

Tuatara have a spiky crest running down their back and can grow up to 30 centimeters in length. They have a slow metabolism and can go without food for months. The tuatara's teeth are unique in that they are not replaced throughout their life, unlike other reptiles.

The tuatara is considered a living fossil, as its ancestors date back to over 200 million years ago during the time of the dinosaurs. They are also culturally significant to the indigenous Māori people of New Zealand.

Tuatara are classified as vulnerable due to habitat loss, predation by introduced mammals, and low reproductive rates. Conservation efforts are in place to protect and preserve this unique species.