Weedle

Weedle (Japanese: ビードル Beedle) is a /-type Pokémon. It is revealed that Green has this Pokémon as shown in the Kanto Pokémon League and was offering it to Red to exchange it for a Butterfree.

Appearance
Weedle is a small insect-like Pokémon appearing as a brown caterpillar with large stingers on both its tail and head. Across Weedle's underside are small, pink nubs which it uses to move. On its head, Weedle has two beady black eyes and underneath a large pink nose.

Special Abilities
Weedle has the ability Shield Dust, which will block any side effect caused by an opposing attack.

Weedle has a large stinger on its head. This stinger, according to the Pokédex, measures around two inches and is very toxic. Furthermore, the Pokédex states that Weedle are brightly colored so as to warn any potential predators.

In the anime series
Weedle first appeared in the episode Challenge of the Samurai where Ash Ketchum attempted to catch one in the Viridian Forest. Ash was preparing to throw a Poké Ball at this particular Weedle when a trainer distracted him, allowing the Pokémon to escape.

Evolution
Weedle evolves into Kakuna once it reaches level 7, which can then further evolve at level 10 into Beedrill.

Origins
Weedle appears to be based off a caterpillar whilst its name may come from worm and needle or a mispronunciation of weevil.

Trivia

 * Despite its species being the Hairy Bug Pokémon, it lacks hair.
 * Prior to Generation V, Weedle was the only brown -type.
 * Weedle is the only Pokémon that cannot learn any Normal type moves.