In the animal kingdom, penises can be spiked, split, corkscrewed – even detachable. They’re one of the most diverse ...

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 study show that animals ...

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 ...

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 ...

Valentine's Day isn't just for humans: the animal kingdom has its own unique and fascinating ways of attracting mates. From elaborate dances to building impressive structures, these animals go all out ...

Finding a partner and sticking with them for life isn’t all that common in the animal world, but a few species really commit.