Dog Fetus Small 320×146 Medium 640×292 Large 1024×467 Download Tiff Original 2400×1095 | (1.5 MB) Description Fetus of a dog, with its membrane. Labels: a, placenta; b, chorion with the allantois adherent to its inner surface; c, amnion seen through outer covering; d, fetus seen through its covering. Keywords dog fetus, placenta Galleries Mammal Anatomy: Internal Organs Source: Vaughn, I. Strangeway's Veterinary Anatomy (Toronto, CAN: J. A. Carveth & Co., Ltd., 1904)