US research says mice can 'sing'

белые мыши мышь животные опыт лаборатория крыса
Researchers from Tulane University in New Orleans, US, have found that mice can ‘sing’ like a choir by matching the pitch of their voice to that of others.
The experiment shows that when two male mice of different types are housed together, they slowly began to match the pitch of their songs to each other. The finding contradicts a long-held assumption that mice cannot learn to adapt their voices – a trait thought to be common only to humans, bats and a handful of bird and large mammal species. Although it was previously known that mice make an ultrasonic noise referred to as a “song” to attract mates, it had never been demonstrated that they were capable of changing pitch. The Telegraph, TASS, Source: Voice of Russia