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Animals

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Asian common toad

The skin of the Asian common toad is laced with a deadly toxin. A new study finds that most predators in Madagascar that might eat the toad lack the genetic mutations necessary to make them immune to the toxin.

leaf-cutter ants

STAY DRY  When the rain starts falling in Central America’s tropical forests, leaf-cutter ants (Atta cephalotes) hurry back to their nests — with or without their leafy cargo, which gets heftier when wet. 

amber

ARRESTED IN AMBER  Chunks of amber contain fossils of 99-million-year-old frogs that were roughly the size of a postage stamp. One chunk (left) holds a recognizably froggy leg and body. Another specimen (right) contains a juvenile with a partial skull.

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