Uploaded November 2025 | Updated September 2026, 2 weeks ago
Testicle size varies in homo sapiens - and it turns out the size, shape and even droop of your balls says a lot about you. Primate testicle size says a lot about our testicle size - so today we explain the fascinating and controversial evolutionary history of human testicles.
Written by: Gregory Brown
Animated by: Gregory Brown
Edited by: Luka Šarlija
REFERENCES:
nature.com/articles/293055a0
https://research-repository.uwa.edu.au/en/publications/perceived-physical-strength-in-men-is-attractive-to-women-but-may/
bbc.com/future/article/20250703-the-body-parts-evolution-still-cant-explain
researchgate.net/publication/261675487_Cool_sperm_Why_some_placental_mammals_have_a_scrotum
researchgate.net/publication/6146629_Swinging_high_and_low_Why_do_the_testes_hang_at_different_levels_A_theory_on_surface_area_and_thermoregulation
Testicle size varies in homo sapiens - and it turns out the size, shape and even droop of your balls says a lot about you. Primate testicle size says a lot about our testicle size - so today we explain the fascinating and controversial evolutionary history of human testicles.
Written by: Gregory Brown
Animated by: Gregory Brown
Edited by: Luka Šarlija
REFERENCES:
nature.com/articles/293055a0
https://research-repository.uwa.edu.au/en/publications/perceived-physical-strength-in-men-is-attractive-to-women-but-may/
bbc.com/future/article/20250703-the-body-parts-evolution-still-cant-explain
researchgate.net/publication/261675487_Cool_sperm_Why_some_placental_mammals_have_a_scrotum
researchgate.net/publication/6146629_Swinging_high_and_low_Why_do_the_testes_hang_at_different_levels_A_theory_on_surface_area_and_thermoregulation
