Are the tuatara extinct

Tuatara are not extinct yet but some believe that they are going extinct.
There are 2 species of them. They diverged from the lizards in the late Triassic but were never as abundant as lizards. While lizards are known to not live that long, the Tuatara may live for more than 30 years.

Rats prey on their eggs as well as some juveniles.

Rats were introduced to more of the islands in which the remaining Tuatara are living in so researchers believe that once this generation die out, there wouldn't be a following generation to carry on because of the rats.

I'm taking a herpetology class that just answered this question by my professor
-William Carey University

Blackout12091: Just as a slight correction to this, the Tuatarra can live well past 100 years of age. They are not even sexually mature until the age of 20.