and sounds – like anything but a run-of-the-mill roach. Madagascar hissing cockroaches are shiny brown and oval-shaped, with no wings and a single pair of antennae. Males sport large horns, which give them an unusual and impressive appearance. Males use their horns in aggressive encounters reminiscent of battles between horned or antlered mammals. Rivals ram one another with their horns (or abdomens) and during the fight often unleash the amazing hisses that give the animal its name. Winning roaches hiss more than losers, so the sounds may be used to help determine a roach hierarchy. __
