In both love and war, alligators signal size by bellowing

American alligators produce loud, low-frequency vocalizations called "bellows." Cognitive biologists at the University of Vienna, Stephan Reber and Tecumseh Fitch, investigated these vocalizations and found that they reveal ...

Drought kills Paraguay's thirsty alligators

A drought in northern Paraguay has driven thousands of thirsty alligators to crowd around lakes and wells, scaring off cattle from the dwindling water sources, environmentalists and locals say.

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