New York City has been plagued by rat infestations in recent years — to the point that city officials announced a few months ago that they were looking to hire a “rat czar” to curb the problem.

When Carolina retired from her job in November, her colleagues clapped, cheered, and celebrated over cake. Over her seven-year career, she had detected more than 3,000 hidden cases of tuberculosis (TB ...

Africa's giant rats have been trained to sniff out landmines and detect tuberculosis in humans, and soon they could turn their superior noses to protecting other animals by finding illegal wildlife ...