Scientists documented an unusually close same-sex bond, including sexual behavior, between a bull and a male donkey.

What it means

Scientists have documented an unusually close bond between a bull and a male donkey, including sexual behavior, which is notable as an interspecies same-sex pair. The observation, reported by Scientific American and other outlets, adds to the growing body of evidence of homosexual behavior in animals and challenges assumptions about animal sexuality. The specific study or paper behind the report is not detailed in the highlight, but the coverage suggests it is based on direct observation by researchers.

Accuracy & sourcesGrounded

The claim is based on a scientific observation reported by reputable secondary sources such as Scientific American and The Guardian, which likely cite a primary research paper or field study. The consistency across multiple outlets and the direct nature of the observation support the solidity of the claim, though the full details of the study are not available from the highlight alone.

How new

This is genuinely new reporting from November 2026, as indicated by the publication window.

Go deeper

• Scientific American — first to publish