Yellow Pikmin
Yellow Pikmin
Pikminicus aurumia
Yellow Pikmin are the second primary colored Pikmin you get in both games. (Notice primary, this excludes Purples and Whites.) They're also the only pikmin with ears.
Pikmin (1)
In Pikmin, the yellow species were available The Forest of Hope from the dormant yellow onion. These Pikmin could carry bomb-rocks, which you could use to destroy iron gates and wooden gates (though they are needed to destroy iron gates), or attack enemies. Friendly fire could also prove fatal to your Pikmin.
Pikmin 2
In Pikmin 2, you found them in the Perplexing Pool after a very long path. You need whites to get them. Instead of carrying bomb-rocks, they instead were made immune to electricity, hence their color.
In both games, the Yellow Pikmin are able to be thrown very high, as this was needed to retrieve some parts/treasures. However, this is just because of their ears, which have aerodynamic properties. This doesn't mean they run faster than Red Pikmin or Blue Pikmin.
Attack: Average
Speed: Average
Throw: High
Carrying Capacity of one Yellow Pikmin: 1 gram