Invasive, yellow cane toads (Chaunus [Bufo] marinus) that weigh roughly 4.5 lbs each have been advancing across The Land of Down Under since 1935, and now occupy more than a million square kilometers, wreaking ecological havoc on native species as they go.
But toads on the invasion's frontlines, researchers from the University of Sydney have found, are stressed out by being foreigners in a foreign land.
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