From Great Dane to Tiny Terrier, A Mutation Creates Enormous Variation in Dog Sizes

Hundreds of Strange, Tiny Fossils Found Inside Fish Cranium From 9 Million Years Ago

A Tiny, Partially Missing Bone Structure in Bat Ears May Have Cleared the Way for Echolocation to Evolve Nearly 90 percent of the nighttime hunters use sound to find prey

Inside the International Effort to Save One Tiny Mexican Fish