This animated short shows the development of boys up to and during puberty. It depicts the typical external changes that occur with the onset of sexual maturity, the structure and function of the sexual organs, sperm formation and pollination.
1955
2020
1960
1962
2006
2008
2023
1941
2014
1998
2021
2011
1984
1956
1944
1964
2016
