Weedle have an exosekeleton only on their head segment; the rest of their body is soft. Weedle can be trained to distinguish between different kinds of plants and are sometimes used to clear out specific weeds or invasive plants with their voracious appetite.
Kakuna have a hard body and a stinger on the end of their tail. They have arms which can extend from their body, which they use to cling to trees or (slowly) move. They feed on sap from trees, and arborists use them to identify sick or dying trees, as kakuna will refuse to feed from such trees.
Beedrill have a hard, smooth exoskeleton. Their wings have a glossy, papery texture, and while they might look fragile they are actually difficult to damage. Beedrill will make little ‘shelters’ out of a papery substance made from wood fibres mixed with their own saliva. A beedrill is the logo of a high-end sports car company in Kanto.
The entire line has been observed comunicating with their own kind by tapping or ‘drumming’ on surfaces with their tail stingers. They have even been found to have unique drumming patterns to refer to individuals - in effect, they have names for each other. Domestic individuals will also ‘name’ their human.
