The phrase "poisonous frogs" refers to frogs that have a harmful substance in their bodies that can cause sickness or even death if touched or eaten. Full definition
According to a new study of poisonous frogs in Panama, they are red. (sciencemag.org)
Among other things, you'll see cool poisonous frogs, learn why we say «mad as a hatter» and understand how howler monkeys can eat poison and not feel it's effect. (chicagoparent.com)
Drug - resistant bacteria are thwarting the world's last - resort antibiotics, leading scientists to seek new compounds from poisonous frogs, backyard soil bacteria, and other wildlife. (sciencemag.org)