Which sounds are used by animals to warn other animals?

Which sounds are used by animals to warn other animals?

• A. Low frequency, noisy growls
• B. High pitched chirps
• C. Soft purring
• D. Quiet whispers

Answer: (A)

Warning signals need to reach others quickly and over a distance. Low frequency, noisy growls fit this purpose because low-frequency sounds travel farther through air and vegetation with less attenuation. Their loud, rumbling nature grabs attention and can be heard by many animals in the group, giving timely warning of danger and helping others respond by staying together or moving to safety. High pitched chirps tend to be more localized and can be blocked by obstacles, so they’re less reliable for broad warning. Soft purring is typically a sign of comfort and affiliation, not danger. Quiet whispers aren’t effective for communication in noisy environments and wouldn’t reliably alert others to a threat.

Warning signals need to reach others quickly and over a distance. Low frequency, noisy growls fit this purpose because low-frequency sounds travel farther through air and vegetation with less attenuation. Their loud, rumbling nature grabs attention and can be heard by many animals in the group, giving timely warning of danger and helping others respond by staying together or moving to safety.

High pitched chirps tend to be more localized and can be blocked by obstacles, so they’re less reliable for broad warning. Soft purring is typically a sign of comfort and affiliation, not danger. Quiet whispers aren’t effective for communication in noisy environments and wouldn’t reliably alert others to a threat.