A frog is an example of an amphibian.
Origin of amphibian
- From New Latin Amphibia class name from Greek neuter pl. of amphibios amphibious amphi- amphi- bios life gwei- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek ἀμφίβιον (amphibion), from ἀμφί (amphi, “of both kinds”) + βίος (bios, “life”)