EN
The article describes techniques for ultrasonographic pregnancy diagnosis in bitches and indicates its advantages compared to other methods such as palpation, radiography or laboratory examination. The authors draw attention to new aspects of pregnancy diagnosis, including monitoring of embryonic and fetal development from fertilization until parturition. The usefulness of ultrasonographic examination of pregnancy disorders such as embryonic death, abortion, placenta and uterus dysfunctions as well as pathology in embryo and fetal growth has been stressed. New applications of ultrasonography such as the prediction of the parturition date based on the measurement of the itrachorionic cavity or biparietal diameter, the determination of litter size and the evaluation of morphological-behavioral fetal development have also been described. Moreover, the importance of ultrasonographic examination of pregnant bitches for the improvement of obstetrics and neonatology in small animal practice has been indicated.