Add Yahoo as a preferred source to see more of our stories on Google. Pufferfish can inflate up to three times their normal size by rapidly swallowing water to appear larger and deter predators.

Kobe University ecologist SUGIURA Shinji discovered that the pupae of the buff-leaf hawkmoth produce sounds by forcing air through holes in their abdomens, the first evidence of such a mechanism.

Insect pupae hiss like snakes for defense. A Kobe University team now reveals the mechanisms, opening the door to further studies involving predator reactions to defensive sounds. Subscribe to our ...