Members of Congress exploded Thursday over reports that taxpayer money has paid for experiments using “transgender lab rats,” saying it was time to shut down the government’s animal-testing industry.

For generations people have associated the terms "lab rat" and "guinea pig" with scientific research. Animal testing remains a standard and has been required for drug approval. Just before Christmas, ...

Scientists have discovered a more robust way of grouping chemicals and using read-across for toxicological data to meet regulatory requirements, which could greatly reduce animal testing. Scientists ...