A cross sectional study was carried out from November, 2017 to May 2018 in Baturntown, Alage ATVET College, and Naka village using serological tests, to determinernthe seroprevalence of canine and swine brucellosis. Accordingly, a total of 389 ownedrndogs (207 from Batu, 107 from Alage, and 75 from Naka) and 196 pigs (167 fromrnAlage and 29 from Batu swine farms) were included in the study. Rose Bengal PlaternTest (RBPT) prepared from the smooth strain B. abortus antigen was used as arnscreening test; whereas Complement Fixation Test (CFT) was the confirmatory testrnfor both swine and canine brucellosis. Furthermore, all sera samples from dogs hadrnalso screened by RBPT containing a rough strain B. canis antigen; and those positivernsamples had considered as positive for B. canis infection. The result of the presentrnstudy indicated that, among the 389 sampled owned dogs, 21 (5.4%; CI: 3.35, 7.96)rnwere positive for anti B. abortus antibodies using RBPT; and 19 of them (4.88%; CI:rn2.7, 7.0) were confirmed by CFT. Moreover, 34 (8.74%; CI: 5.92, 11.56) owned dogsrnwere positive for anti B. canis antibodies. Among 196 serum samples from pigs,rn10(5.1%; CI: 0.95, 6.19) were found to be positive by RBPT and 7(3.57%; CI: 1.99,rn8.21) of them were further confirmed by CFT. The final simplified multivariablernlogistic regression analysis of the risk factors revealed that sex, living condition, andrnhistory of obstetrical problem were significantly associated with the overall caninernbrucellosis due to both strains of Brucella species (p< 0.05). Moreover, locationrndifference and age had also significantly associated with canine brucellosis due tornsmooth and rough strains, respectively (p< 0.05). On the other hand, age and historyrnof obstetrical problems were the major risk factors for overall swine brucellosisrnseropositivity (P< 0.05). Thus, the present study suggests that canine and swinernbrucellosis are prevalent in the study areas. The seropositivity in both animals couldrngive an insight that brucellosis could pose a public health hazards. The awareness ofrnthe people toward the disease was also the gap in the study area. Hence, this warrantsrnpublic education among the community; and further extensive epidemiological andrnmolecular investigation is recommended.