Yellow Bulborb

The Yellow Bulborb is a type of Bulborb seen in the Pikmin 2 Beta.

In Pikmin: Sinister Incinerator these bulborbs are exactly as they appear in the picture above, and they behave nearly identically to Red Bulborbs. It is speculated that Yellow Bulborbs and Red Bulborbs may be one in the same, with the color changes merely depending on the region. Like Red Bulborbs, Yellow Bulborbs are mimicked by Breadbugs as well.

Portal- Kombat

PikSpore
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In PikSpore, they are not much different from Red Bulborbs, and live in sandy and/or rocky enviroments, like the Sand Lands.

Olimar's Notes
''A grub-dog similar to the red bulborb, the yellow bulborb's back is a bright yellow, most likely due to environmental changes. It too is nocturnal, and feeds mainly on small insects that burrow out of the ground.''