St. Louis Zoo uses fecal matter to study animal health
ST. LOUIS (AP) – The St. Louis Zoo has tested 42,000 stool samples in 20 years of operation from more than 150 zoos and other organizations around the U.S. to study the hormonal health of animals. The St. Louis Post-Dispatch reports the zoo’s endocrinology lab has taken samples from more than 60 animal species. The…