Why is pikachu classified as a mouse pokemon as opposed to rabbit with those ears? And why is RATtata a mouse pokemon too?? Who decides these names and why wouldn’t I be surprised if it was you?

When it comes to pikachu, actually, it does strongly resemble a mouse in both aesthetics (past its long ears) and behavior, especially when it comes to its habit of burrowing into walls and biting into the wires inside. Likewise, pikachu generally move about much like mice by scurrying instead of hopping, and they organize themselves into mouse-like nests instead of rabbit-like warrens. In every way, pikachu actually is a mouse-like pokémon; it’s just that its ears have evolved to be a bit longer due to their secondary function of detecting electricity in the air in conjunction with their tails.

As for rattata, that … is actually an excellent question, as they very clearly rats instead of mice. It could very well have to do with the larger raticate’s tendency to battle its own preevolution with incredible viciousness, much like how their mammalian counterparts often hunt and consume mice.

Either way, I assure you, highly qualified pokémonologists are responsible for giving each pokémon their names and official designations, and in any case, I was only responsible for dratini … which I named when I was eight. Just in case you were thinking of judging me for giving dratini a name that amounts to “mini dragon.”