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 ...

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.

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 ...