Nidoran (Male)

Nidoran is a unique Pokemon. It has a male counterpart and a female counterpart. It is the first Pokemon to have its gender identified. Nidoran male has a different evolutionary line as its female counterpart. It can evolve into a Nidorino and then into a Nidoking with the use of a Moonstone. Before Generation II, Nidoran was the only set of Pokemon to have its gender identified.