For some animals, reproduction comes at the ultimate cost—their own lives. While this may seem extreme, it's a natural strategy to maximize reproductive success. These species invest everything into ...

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.

From mantises that both eat and mate with their suitors at once to baboon couples that can’t turn off the PDA, these animal mating rituals are both crucial and wildly entertaining. 0:00 - Intro to 13 ...