Postcoital Penis Cleaning in Budongo Chimps

The authors of a study called High Frequency of Postcoital Penis Cleaning in Budongo Chimpanzees do not beat about the bush. “We report on postcoital penis cleaning in chimpanzees,” they write. “In penis cleaning, leaves are employed as ‘napkins’ to wipe clean the penis after sex. Alternatively, the same cleaning motion can be done without leaves, simply […]

Improbable Research