>>46177064>Pokemon>canonLook man, GameFreak knows how to strike a balance of speculative zoology and pure magic when designing mons. That said, the species designing team is clearly different from the "lore" writing team.
Look at all the electric mons, no, really look at them ! They are 90% creatures with fuzzy hyde and high speed. This means that the design direction is clearly "creatures that move so fast that air friction charges their hair with static electricity, which they then channel...somehow"
The first electric fossil, a feathered raptor.
The electric Oricorio has loose feathers concentrated at their hands, perfect for static electricity.
They even made Electabuzz fuzzier upon evolving.
Hell, even Vikavolt clearly builds up static using its highly vibrating wings, a common trait of insects like bees or beetles, buzzing around when flying (which also is linked to an alleged static electr-antigravity tech made by a Soviet, Viktor Grebennikov)
It doesn't matter what the Dex says. The only outliers are real life Electric types:
bio-electric animals(Elektross, Lanturn),
"photosynthetic" salamanders (Heliolisk)
,and magnet-based creatures/robots.
You could make a case for circuit-based mons, but all the rest are unnecessary.