Yeah yeah we all know about Nidorino already. Just let him sleep. What I can say is that, like Vulpix, he's maturing as well, though the changes are more sudden than gradual. Also picked for favorite Poison because I had better slots in mind for other Nidos. Since I've worked with Nidorino(s) much longer than Nidoran Male, Nidorino happened to get the top billing between them.
Nidorino is from Alternate Universe, and is also inspired by the Pokemon of the same name from my copy of Pokemon Silver.