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 ...

Plants and animals have evolved all sorts of ways to make themselves more appealing to potential mates—including colorful feet, flamboyant feathers, complex mating dances and sexual deception. Many ...

Photograph of three male zebra finches (Taeniopygia castanotis), whose mating calls were used as part of the study. Credit: Raina Fan. The bright colors of butterfly wings, the sweet aromas of flowers ...