Most amphibians die when exposed to salt — except the crab-eating frog, which thrives with it. Here’s how it rewrote the ...

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Some poison dart frogs carry toxins so powerful that tiny amounts can be lethal to humans. The poison is stored in the skin as a defensive weapon, making the frog dangerous even without biting or ...

A duplicated gene evolved into a switch that determines sex in frogs, revealing how evolution can safely reshape critical ...

Early in development, many animals pick a team—male or female—based on their genetics, and, with time, acquire the ...