Pikachu is one of the species of Pokémon and is covered completely with yellow fur. He is an extremely cute rodent with long yellow ears with black tips. A Pikachu's back has two brown stripes, and its large tail is notable for being shaped like a lightning bolt. On its cheeks are two circle-shaped red pouches used for storing electricity. They turn yellow and spark with electricity when its about to use an Electric Attack such as Thunderbolt. It has also been known to generate small surges of electrical energy in anger or for protection so please be careful when you are building one!