David Stipp’s “Why Rats Laugh & Jellyfish Sleep” is a breezy ode to nature’s long game. The respected science expert’s beautifully written book celebrates the adaptive ingenuity of animals whose ...
Rats have what appears to be a “laugh centre” in their midbrain that is activated when the animals are tickled or when they engage in play behaviours. Researchers first discovered that rats could ...
If you tickle a rat's belly, it squeals with laughter. However, we are unable to perceive this laughter as its frequency, around 50 kHz, exceeds the range of human hearing. Neuroscientist Jaak ...
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 ...
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How can you tell when a rat is happy? The answer may be to look at its ears. A recent study has found that in a similar way to how humans smile when expressing pleasure, the rodents relax their ears, ...
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