Certain animals can emit and hear ultra-sonic frequencies more than 20 kilohertz. Bats, Insects like beetles, moths, praying mantis, dolphins, dogs, frogs and toads, etc. communicate using ultrasonic hearing. Infrasound, is a low-frequency sound less than 20Hz. Animals that can communicate using infrasonic sounds are; Rhinos, hippos, elephants, whales, octopus, pigeons, squid, cuttlefish, cod, Guinea fowl.