Slug

Slugs are the trademark summon of Tsunade, though only Katsuyu has been seen in the series. Fans speculate that Sakura will at some point learn to summon slugs. Slugs' offensive abilities seem to revolve around shooting acid from their mouthes, similar to the way toads use oils. Slugs have also been shown to be able to divide themselves into many smaller replicas, though this ability may be unique to Katsuyu due to her size. Slugs may also be able to absorb chakra and even control it to some extent, as shown when Tsunade gave Katsuyu her healing chakra to heal the citizens of Konoha when Pain attacked.

Slug Abilities

 * Tongue Tooth Sticky Acid
 * Chakra utilizing ability
 * Slug Great Division