The life of a caterpillar before it enters its cocoon mostly consists of eating as much as it can while avoiding being eaten itself. To stay alive, the Nessus sphinx hawkmoth caterpillar’s defense ...

It's hard to yell "BACK OFF!" when you have no lungs, but this caterpillar has figured out a way. Under attack, the Nessus sphinx moth caterpillar emits a sort of crackling buzz from its mouth.

When they’re threatened by a predator, the larvae of Nessus sphinx hawkmoth caterpillars (Amphion floridensis) produce a high-pitched “whistle” by forcing air out of their mouths. Researchers reported ...