Speciesism

January 14, 2021 - AAAS

How many mice and rats are used in U.S. labs? Controversial study says more than 100 million

The most numerous mammals in U.S. research are also the most invisible. Mice and rats comprise the vast majority of lab mammals, yet no one knows exactly—or even approximately—how many are used in scientific experiments every year.

Now, for the first time, someone has attempted to calculate this number using data from U.S. labs, and it’s big: More than 111 million mice and rats are used annually in U.S. biomedical research, according to a new study. That represents more than 99% of all lab animals.

Continue Reading at:

AAAS