Fig. 2.

Ultrasonograms of the fetal structures in pregnant Miniature Schnauzer bitches. Day 23: Transverse image of the gestational sac contained an oblong-shaped embryo (white arrowhead) apposed to the uterine wall. Day 32: Longitudinal image of a fetus with an anechoic area in the head and forelimb buds (white arrowheads). The fetal crown-rump length was 20 mm. Day 38: Longitudinal image of a fetus with hyperechoic skeletal structures in the head and thoracic wall (white arrowheads). Day 45: Longitudinal image of a fetal vertebral column and kidney (white arrowheads).