Nowadays, the online business is fast-growing since it is convenient, more profitable, and less energy-consuming. The changing consumers’ needs force companies and organizations to adjust and modernize their marketing strategies. The authors emphasized that Internet advertising channels would overcome the traditional ones. Therefore, it is relevant to consider the latest trends in e-commerce to provide effective advertising campaigns. This study aims to conduct the competitive analysis of Ukrainian veterinary enterprises’ websites as one of the key marketing management determinants. The study object are the most prominent Ukrainian veterinary enterprises. The methodological basis for this paper includes trend, bibliometric, and comparative content analysis. The trend analysis results showed a constant interest in web management worldwide. In turn, there are significant fluctuations over the previous five years in Ukraine. The findings indicated that search requests for «pharmaceutics» worldwide are gradually increasing, while there is not enough statistic data in Ukraine. The bibliometric analysis for Scopus publications addressed the marketing management in the pharmaceutical were visualized by 4 clusters. The first cluster covers marketing, management, and risk issues; the second – pharmaceutical industry, the third – economy; and the fourth – quality control. The findings showed that veterinary medicine was mostly associated with drug efficacy, management, investment, management, risk, organization and management, patents, and quality control. This issue has been most actively studied by scientists from the United States, Britain, Germany, India, and Italy. This study provided the comparative analysis of veterinary enterprises web sites based on the main indicators as follows: usability, site structure, site indexation, number of external pages, overall traffic, behavioral factors (bounce rate, pages per visit, time on site), traffic sources (direct, referrals, SEO, SMM, e-mail, and display advertising), and adaptability to the mobile versions. The obtained results showed that all Ukrainian biological vaccines manufacturers for animals were represented on the Internet. In turn, as of September 2020, Biotestlab most effectively used the Internet to promote products. In second place is the Sumy Biological Factory, and then – Kherson Biological Factory.