The phrase "wild frogs" refers to frogs that live and thrive in natural habitats like forests, swamps, or ponds, without any human intervention or control. Full definition
«As far as we know, frogs are the only animals to expel foreign objects through the bladder,» says Christopher Tracy of Charles Darwin University in Alice Springs, Australia, who made the discovery while monitoring wild frogs with implanted trackers. (newscientist.com)
In lab experiments using captive - bred mountain yellow - legged frogs from eggs collected in the wild, Harris and his colleagues determined that the bacterium Janthinobacterium lividum, cultured from wild frogs, was protective against chytrid. (scientificamerican.com)
When Noriko Iwai of the University of Tokyo, Japan, captured wild frogs, she found that males have longer and thicker pseudothumbs than females. (newscientist.com)