When asked to draw their local wildlife, 401 UK schoolchildren aged 7 to 11 most commonly drew mammals and birds, while amphibians and reptiles appeared in the fewest drawings, suggesting imbalances ...

Despite a common narrative that male mammals tend to dwarf female ones, fewer than half of mammalian species display that pattern, a new study suggests. By Emily Anthes Female elephant seals are not ...

Placental mammals have a placenta, an organ that develops during gestation and bridges mother and fetus. The placenta provides nutrients to the fetus to develop in the womb, protecting the baby from ...