Giant swallowtail caterpillar, Papilio cresphontes, from Monteverde, Costa Rica. When threatened, they are capable of inflating tiny 'horns' called osmeteria (singular osmeterium) that give off a strong unpleasant odor.
Colorful caterpillar from Monteverde, Costa Rica.
Ladybird beetle larva (Coccinellidae) from Iowa.
