Cast from a real specimen and painted to show fine detail, this model features a pup with a yolk sac in the uterus. It also shows the mouth and pharynx; a dorsal view of the eyes, brain, and cranial nerves; branchial circulation; a ventral view of the viscera and circulatory vasculature; and the trunk musculature in lateral and cross-sectional views. The model is made from unbreakable materials and includes a key identifying 100 structures.