Coverage dated November 2, 2026 to November 3, 2026

An unusual sexual bond between a bull and a male donkey

Headline from Phys

Sex between animals of the same sex is widespread in nature. But researchers reporting in the journal Current Biology on Nov. 2 describe an unusual partnership involving an ongoing sexual relationship between a bull and a male donkey living on an Ethiopian plateau.

Phys's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Reports & sources

4 articles, oldest first.

  1. Phys

    An unusual sexual bond between a bull and a male donkey (opens Phys)

    Published

    Phys's feed description

    Sex between animals of the same sex is widespread in nature. But researchers reporting in the journal Current Biology on Nov. 2 describe an unusual partnership involving an ongoing sexual relationship between a bull and a male donkey living on an Ethiopian plateau.

  2. Independent Journal Review

    Researchers Document Bull-Donkey Sexual Bond in Ethiopia (opens Independent Journal Review)

    Published

    Independent Journal Review's feed description

    Researchers documented a selective relationship between Achille, a bull, and Patroclo, a male donkey, on an Ethiopian plateau: over four days, they recorded repeated mounting alongside affectionate behaviors, despite both animals having other potential partners.

  3. The Guardian

    ‘It’s really, really unusual’: tender bond between male donkey and bull baffles scientists (opens The Guardian)

    Published

    The Guardian's feed description

    Patroclo and Achille’s interspecies affair sheds new light on social and sexual relations between animals, scientists say In ancient myth, Achilles and Patroclus were two Greek heroes of the Trojan war whose intense bond was believed by some to have turned into a sexual relationship.

  4. ZME Science

    A Bull and a Male Donkey Kept Having Sex. Scientists Say Their Relationship Was About More Than Mating (opens ZME Science)

    Published

    ZME Science's feed description

    This is making biologists question what they know about evolution.