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Pregnancy termination is a required procedure in companion animal practice. In healthy bitches with confirmed pregnancy, good results are obtained with the combination of prostaglandin F2 and dopamine agonist, followed by regular sonographic examination until confirmed abortion. The aim of this study was to establish a simple and easily applicable procedure, with different dynamics of application of dinoprost and cabergoline. Dinoprost was administered intramucousally in the vestibule of vagina. Twenty bitches were divided into four equal groups. Group A received dinoprost and cabergoline daily; group B received dinoprost every 48 h and cabergoline daily; group C received dinoprost daily and cabergoline every 48 h, and group D received both cabergoline and dinoprost every 48 h. The treatment lasted until abortion was sonographically confirmed. The pregnancy was successfully terminated in all bitches, and side effects appeared in 90% animals, though they were of strong intensity in only 15% of bitches. Dinoprost administered intramucousally was effective with fewer undesirable, strong, systemic side effects. Drug administration every 48 h also induced abortion, with negligible side effects, but with slightly longer duration of treatment. This combination could be interesting in cases with time-limited owners and in countries where other drugs are unavailable. [ABSTRACT FROM AUTHOR]