Fatal attractions are a standard movie plotline, but they also occur in nature, with much more serious consequences. As a ...

Dik-Dik. These tiny antelope are socially monogamous and form deep attachments to their mate. In these pair-bonded animals, the loss of their partner can be as traumatic as it is for humans.

Typically, many sexual animals find a mate based on observable characteristics, known as a phenotype. The animal with grander, flashier or more flamboyant features than its competitors is preferred.

Humans have destroyed or polluted animal habitats. But perhaps the most obvious way that we have affected animals is by placing barriers, such as roads, between populations, making it hard for ...

Evolutionary biologist Nathan H. Lents details how animal relationships can offer perspective on sexual diversity, social monogamy and gender identity—for humans.