Flaaffy

“As a result of storing too much electricity, it developed patches where even downy wool won't grow.”

— Pokémon Gold

“Its fluffy fleece easily stores electricity. Its rubbery hide keeps it from being electrocuted.”

— Pokémon Silver

“Because of its rubbery, electric­ ity-resistant skin, it can store lots of electric­ ity in its fur.”

— Pokémon Crystal