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66,000 Animals Inside…

They are dogs, cats, pigs, and ferrets. Animals are bred and sold by the thousands at Marshall BioResources, one of the U.S. animal research industry’s biggest suppliers of live beings who will be used in experiments and testing.

Together we will end animal experimentation in our lifetime.

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Millions of caring, thinking, feeling beings are tortured and killed for nothing.

Over 95% of drugs

tested on animals fail in human trials.

90% of animals

in labs are excluded from The Animal Welfare Act.

1,609,186 animals

were reported in 1,048 U.S. animal research facilities in 2023 alone.

What’s Marshall BioResources?

Marshall BioResources is a mega-breeder of dogs, cats, ferrets, and pigs sold to research laboratories for unimaginably cruel experiments.

Learn More and Take Action

ARLO: Peek Into Animal Labs

To find out what’s happening to animals in labs in your hometown or at your alma mater, search our ARLO database.

The animal experimentation industry relies on secrecy to continue business as usual. That’s why we created the animal protection movement’s first publicly accessible research and transparency tool—the Animal Research Laboratory Overview (ARLO). ARLO aims to expose everything we know about laboratories experimenting on animals across the United States. 

Search ARLO Now

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Every gift—big or small—helps us free animals from torture in labs.