A National Primate Research Center's choice to move toward developing nonanimal alternatives has led some researchers to question whether the nature of their work will change.
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About two million animals were used or killed for research purposes in 2024.
For thousands of years, humans have studied animals’ bodies to better understand our own.
The methods predict the lung irritant risk of surfactants and oral toxicity of some pesticides but shouldn’t completely replace animal models, one scientist warns .
Editor’s note: This article contains graphic descriptions of how animals are treated during testing.
Organizers of the March to Abolish Animal Testing are calling for immediate action after explosive new whistleblower evidence alleging severe cruelty toward dogs at Marshall BioResources was submitted .