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A little wonder, every day

Rat calls that sound like laughter

Титульна AI-згенерована ілюстрація / AI-generated cover illustration. Curious brown rat in a natural-looking enclosure.
Brown rat eating in a garden.
Brown rat swimming in a lake.
AI-generated humane illustration of a young rat gently playing with a researcher's hand in a study setting.
AI-generated concept showing a rat vocalizing alongside an abstract spectrogram band and a human ear silhouette.
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Титульна AI-згенерована ілюстрація / AI-generated cover illustration. Curious brown rat in a natural-looking enclosure.

Listen to fact0:00 / —

During play and tickling, rats emit ultrasonic calls—brief signals around 50 kHz. They are often called rat “laughter” because they occur during play that is positive for the animals, but the comparison is only an analogy: rats do not laugh with a human voice, and the calls are too high for people to hear without special equipment. These calls can also occur in other situations, so researchers interpret them alongside the animals’ behavior and the conditions of the experiment.