Some animals form lifelong pair bonds that run deeper than simple mating. These connections shape how they live, move, and interact with the world. When a partner is lost, the change is often visible.

Throughout the animal kingdom, there are animals that form bonds that last a lifetime, showing loyalty and partnership that can be surprising to people. From birds to mammals, these creatures stick ...

Fatal attractions are a standard movie plotline, but they also occur in nature, with much more serious consequences. As a conservation biologist, I’ve seen them play out in some of Earth’s most remote ...

WEST LAFAYETTE, Ind. - When female tiger salamanders choose a mate, it turns out that size does matter - tail size that is - and that's not the only factor they weigh. Findings of a Purdue University ...

Rapid changes in Arctic temperatures are influencing animal reproductive behavior. A University of Alaska Fairbanks scientist published a study in the current edition of Science magazine, building on ...

Living organisms have been colonizing the planet for nearly four billion years. They’ve taken on countless forms through assorted evolutionary and adaptive mechanisms to survive in environments where ...