While monogamy is relatively rare in the animal world, some species form deep, lifelong bonds that are impressive and inspiring. These animals exemplify loyalty and devotion, creating partnerships ...

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Is male helping behavior important for monogamous partnerships? This book provides answers concerning the biological roots of social monogamy in animal groups as diverse as ungulates, carnivores, ...

Around 90 percent of bird species are socially monogamous, but if the bond is broken without death, it is known as divorce.