The rat called to attract mates is born by birth

Scientists found that mice like to sing naturally and do not like quietness.

When a male mouse encounters a potential mating object, it will emit a series of complicated chirping and chirping sounds that sound very similar to birdsong.

Although the frequency of the supersonic sound is beyond the range of human hearing, the human ear is basically inaudible, but the female mouse can hear these sounds, thereby enabling them to choose. "fathers" are best suited for their next generation.

Previously, scientists knew that rats could make shrill sounds that people could not hear. In 2005, American scientists discovered that the noise was formed by the continuous repetition of simple tones, like the cries of birds and whales.

After many studies, Japanese scientists finally answered this question. They conducted experiments on two groups of mice with completely different vocals. Specifically, scientists changed the mother of two groups of mice.

After the rats tested for 10-20 weeks, the scientists recorded their cries and analyzed.

Scientist Takefumi Kikusui was in charge of the research team, said the results showed that the singing of experimental mice was like their mother's cries, not like her mother's cries raising them. This shows that mouse sounds are innate, not by learning.