12. FEMALE PIKACHU HAVE A NOTCH ON THEIR TAILS:
The one thing that many beginner Pokémon fans don’t understand right away is that Pikachu isn’t just the name of one singular Pikachu, it’s also the plural for an entire Pokémon species. And within that species are – of course – female and male Pikachu, each roaming around with their own distinctive personality. So how do we differentiate the two genders? Well, it’s relatively simple; at least in some cases.
Although Pikachu never had an established gender difference at the onset of the franchise, in Pokémon Diamond and Pearl gender differences were introduced to the Pokémon universe, thus making identification easier; should that be of concern to anyone for whatever reason. Since then, female Pikachu was seen with notches or indents at the end of their tails, and males weren’t. But don’t worry, this isn’t some type of Avatar-esque sex adventure whereby Pikachus everywhere is fitting their tails together. At least, we don’t think it is.