A new Cambridge University study has ranked humans 7th out of 35 mammals for monogamy, placing us above meerkats and gibbons but below species like Eurasian beavers and moustached tamarins.
Researchers compared genetic data to measure how often siblings shared both parents. Humans showed 66% full siblings, while beavers scored 72%. At the bottom of the list were chimpanzees, gorillas and dolphins, reflecting more promiscuous mating habits.
Though human monogamy varies widely across cultures and history, the findings show we belong firmly among the more monogamous mammals. Scientists believe pair-bonding may have evolved alongside paternal care, helping offspring survive.
Even so, experts note that human relationships are heavily shaped by culture, religion and social norms, with serial monogamy still common.
In the animal world, we’re monogamous — just not quite as loyal as beavers.
