Ants don’t have lungs. They instead breathe through spiracles, nine or ten tiny openings, depending on the species.
100 Mind-Blowing Spiracles Facts
A cockroach can live for weeks after its head has been cut off. If you’ve ever been assaulted by a cockroach, your instincts would be fight or flight – and the brave few who would fight can probably agree that cockroaches can be ridiculously hard to squish and kill. Even with its head cut off, a roach would survive because of its open circulatory system or using tiny holes in its body called spiracles to breathe. Additionally, cockroaches don’t need food like we do, so they’d be able to go for weeks without it.