Researchers have placed in the wild a very special male that, like its wild cousins, can put on physical displays to establish its dominance.

But this reptile's skin is made of rubber, not scales, and its "heart" is a nickel-cadmium battery.

The alpha male in question is "Robo-Ollie," a robotic tuatara created to help researchers understand the behavior of these rare reptiles, the last species in a family that dates back 200 million years.