This article presents the results of scientific research on the etiology, clinical signs and chemotherapy treatment of breast tumors among dogs.

The article presents the results of experiments conducted on the farms of “Olga” and “Uzbekistan” karakul companies in Nurabad district of Samarkand region. According to the results of the study, censorship among sheep was 6.05% in “Olga” and 4.01% in “Uzbekistan”, and multiceptosis among dogs was 4.11% in “Olga” and “Uzbekistan” -2,8%, cenurosis among sheep by deworming dogs was reduced by 10%.

The article compares the literature on the biology, ecology, some morphological features, epizootiological status of sheep moniesiosis pathogens, important diagnostic features that distinguish them from individual studies, data were analyzed.