1. Animals

    Music without Borders

    When birds trill and whales woo-oo, we call it singing. Are we serious?

  2. Animals

    Eat the Kids: Are cannibal fish just freshening the O2?

    In beaugregory damselfish, males that snack on some of the eggs supposedly in their care may end up benefiting the rest of the egg clutch by making more oxygen available.

  3. Animals

    Pregnant—and Still Macho

    Some of the basic theories of sexual behavior and sexual selection are getting attention thanks to a burst of new studies in the topsy-turvy social world of the seahorse, where the males get pregnant.

  4. Animals

    Hormone still rules no-tadpole frogs

    Coqui frogs may skip the tadpole stage, but within the egg, they undergo a metamorphosis ruled by thyroid hormone.

  5. Animals

    Many fish run on empty

    Many fish eat all the time, while some others spend their days going from brief feast to lengthy famine.

  6. Animals

    Singing frog in China evokes whales, primates

    A frog in China warbles and flutes with such versatility that its high-pitched calls sound like those of birds or whales.

  7. Animals

    Ant Enforcers: To call in punishment, top ant smears rival

    In Brazilian ant colonies where a female has to fight her way to the top, she stays in power through some judicious gang violence.

  8. Animals

    Blame winter for the vanishing sparrows

    Changes in winter farming practices may help explain a puzzling drop in number of rural house sparrows in southern England.

  9. Animals

    Getting a Grip: How gecko toes stick

    Scientists have pinned down the molecular basis of the gecko's astonishing ability to scamper up polished walls and hang from ceilings, paving the way for a new type of synthetic dry adhesive.

  10. Animals

    New frog-killing disease may not be so new

    The skin disease that savaged amphibians in remote wildernesses in the 1990s has been linked to outbreaks in the 1970s.

  11. Animals

    What’s the Mane Point? Foes and females both have role

    The condition of a lion's mane apparently advertises high-quality mates to picky females and wards off male adversaries.

  12. Animals

    Male butterflies are driven to drink

    Monarch butterflies that winter in California, especially males that had a demanding day, search out dewdrops as a water source.