Tadpoles of the river frog, Lithobates heckscheri (seen here as an adult), form schools that are unusually large for frogs, amassing as hundreds of larvae. “No one can mistake a frog for any other ...

Throughout their life cycle, amphibians are exposed to diverse pathogenic threats including bacteria, viruses, fungi, protozoans and helminths. Amphibians defend themselves with innate and adaptive ...