Researchers discovered world's first known venomous frogs in Brazil. This undated photo shows Aparasphenodon brunoi, a venomous frog. Butantan Institute/Carlos Jared There were no known venomous frogs ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results