Dogs excel in high-pitched sounds, up to 65,000 Hz. They detect softer sounds, -5 dB to -15 dB, between 3,000 and 12,000 Hz.
Humans can't hear above 20,000 Hz. Dogs' sensitivity surpasses ours above 12,000 Hz. Their hearing is exceptional!
Dogs' predatory heritage gives them keen hearing for high-pitched sounds, like mice squeaks. They sense earthquakes and anticipate arrivals.
Human cooperation shaped our ears for human voice pitch. Dogs' sensitivity to high-pitched sounds explains their distress from common noises.
Humans & dogs hear remaining range. Humans: max sensitivity 2,000 Hz (speech range). Dogs: max sensitivity 8,000 Hz (prey).
Dogs detect small frequency diffs, locate sounds less precise. Humans: sharp location (1°), dogs (8°).
Researchers test dogs' hearing with BAER, using electrodes and earphones. Hearing loss can be assessed. Adaptation is possible.
BAER test determines dog's hearing. Age or infection may cause loss. High-pitched sounds may still be detected when hearing fades.