Elephants: Known for their infrasonic communication at frequencies below 20 Hz.
Whales: Certain whale species, like blue whales, produce and detect sounds below 20 Hz.
Hippopotamuses: Communicate using low-pitched "grunts" and "honks."
Rhinoceroses: Rely on low-pitched vocalizations for territorial marking and communication.
Giraffes: Use infrasonic sounds for long-distance communication.
Crocodiles: Can hear low-frequency vibrations in the water.
Owls: Despite their acute hearing at high pitches, owls can also hear low-pitched sounds.
Lions, Tigers, and Leopards: These big cats produce and respond to low-pitched grunts and roars.
Deer and Moose: Communicate using low-pitched vocalizations.
Bears: Emit low-frequency sounds for communication, including growls and "huffs."
Bats: Some bat species use echolocation calls at low frequencies.
Snakes: Certain snakes can detect low-pitched sounds through vibrations in the ground or water.
Insects: Some insects, such as crickets, have exceptional hearing at low frequencies.