The Bull And Male Donkey Who Choose Each Other Again And Again (For Sex)

Key Points:

• Researchers from the University of Pisa documented a persistent, mutual sexual relationship between a bull (Achille) and a male donkey (Patroclo) in Ethiopia, marking a rare example of cross-species same-sex sexual behavior observed over time.
• Such behavior, often dismissed or underreported historically, challenges previous assumptions about animal sexuality and reproductive strategies, highlighting the complexity and flexibility of social relationships among animals.
• Cross-species sexual interactions, typically seen as reproductive interference or mistakes, are usually observed between closely related species; however, the Achille-Patroclo bond is notable due to the distant relation between donkeys and cattle and the active, voluntary nature of their association.
• The researchers noted frequent affectionate behaviors and repeated mounting without avoidance or aggression, suggesting a meaningful social bond beyond mere reproductive motives, though the exact emotional context remains unclear.
• The study emphasizes the need for further investigation into the development and significance of such interspecies relationships, while the researchers plan to explore whether Achille and Patroclo will reunite after being separated.