Then the baby crawls under the mothers belly and looks for the teats. While it is doing so, the mother turns her baby upside down and starts washing it with her tongue. And while the mother is grunting silently, the baby sings cheerfully and happily in highest tones (singen.wav)
More Baby Sounds
The young chins are much more talkative than the full-grown one. While they are seeking for shelter close to their mother, there is always an active conversation: