One study found that rats emitted ultrasonic vocalizations when they were subjected to manual somatosensory stimulation, i.e., tickling. The results of this controversial research were published in ...

Juvenile-adolescent rats often engage in rough-and-tumble play, during which they emit characteristic ultrasonic vocalizations. These vocalizations, typically in the 50 kHz frequency range, are ...

Rodents emit a rich repertoire of ultrasonic vocalizations that serve as windows into their emotional states and social interactions. These high-frequency signals, imperceptible to the human ear ...

If you think laughter and comedy are reserved strictly for humans, you'd be wrong. A study in the late 1990s showed that creatures like rats emit ultrasonic vocalizations while playing with or ...

This narrative illustration visualizes the discovery of how oxytocin-mediated neural circuits in the hypothalamus promote social bonding through playful interactions. A traditional Japanese landscape ...