The animated film is based on the tale of Korney Chukovskiy.
The third and final part of the animated trilogy about Dr. Aybolit based on Chukovskiy's poetic tales. The first two parts are "Limpopo" (1939) and "Barmaley" (1941). In contrast, the "Peacock Tail" is not happening in Africa.
The animated film was repeatedly released on DVD in cartoon collections: "Forest Fairy Tales" Part 2, Soyuzmultfilm, distributor "Soyuz".