Frog Small 320×191 Medium 640×382 Large 1024×611 Download Tiff Original 2400×1431 | (3.3 MB) Description A side view of a frog's internal structure. Keywords amphibia, amphibian, anatomy, frog, frog stomach, frogs Galleries Amphibian Anatomy Source: Buel P. Colton, Zoology: Descriptive and Practical (Boston:D.C. Heath & Co., 1903) 182
