Lemurs show there's no single formula for lasting love

Humans aren't the only mammals that form long-term bonds with a single, special mate—some bats, wolves, beavers, foxes and other animals do, too. But new research suggests the brain circuitry that makes love last in some ...

Some prairie vole brains are better wired for sexual fidelity

Researchers at The University of Texas at Austin have found that natural selection drives some male prairie voles to be fully monogamous and others to seek more partners. The surprising contrasts in the animals' brains result ...

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