All is in our genes. From speaking to laughing. Even the sex yells. A new research published in the journal PLos One has even found the first genes of sex calls in male mice.
A male mouse on the way of having a hanky-panky session emits ultrasonic delight squeals. These vocalizations are the results of a gene controlling the synthesis of the brain molecules (amphetamines) involved in emotions, both in mice and men. Thus, mice squeak of joy.
The fact that adult mice emit ultrasounds (soun...
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