Add Yahoo as a preferred source to see more of our stories on Google. Two bright red ladybugs walk towards each other on a twig, one on top, the other beneath, on a bright blue background. Each year, ...

The animal kingdom stretches anatomy far beyond human expectations. Some creatures carry organs that rival furniture in size, while others rely on structures so tiny they can only be seen through a ...

Surprisingly, genome comparisons have failed to resolve a major question in animal evolution: Which living animals are the descendants of the earliest animals to evolve in the world's oceans?

This blog post addresses behavior across all animal species. It considers what we can learn about behavior when we do not limit our study to just humans. Studying nonhuman animal behaviors is ...