| streptococcus bovis | A species of gram-positive, coccoid bacteria commonly found in the alimentary tract of cows, sheep, and other ruminants. It occasionally is encountered in cases of human endocarditis. This species is nonhemolytic. (12 Dec 1998) |
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| Demodex bovis | A species that causes large swellings in the skin, filled with fluid or a cheezy material containing mites, which damages the hide of cattle. (05 Mar 2000) |
| theileria | A genus of tick-borne protozoa parasitic in the lymphocytes, erythrocytes, and endothelial cells of mammals. Its organisms multiply asexually and then invade erythrocytes, where they undergo no further reproduction until ingested by a transmitting tick. (12 Dec 1998) |
| theileria annulata | A protozoan parasite causing tropical theileriasis in cattle. It is transmitted by ticks of the hyalomma genus. (12 Dec 1998) |
| Theileria felis | A highly pathogenic species that causes theileriosis in domestic cats and bobcats. Synonym: Cytauxzoon felis. (05 Mar 2000) |
| Theileria hirci | A species that causes malignant theileriosis in sheep and goats. (05 Mar 2000) |
| Theileria lawrencei | A parasite of the wild African buffalo (Syncerus caffer); it is highly pathogenic to cattle, causing Corridor disease. Synonym: Theileria lawrencei. (05 Mar 2000) |
| Theileria mutans | A species that causes benign bovine theileriosis in Africa and the Carribbean; occasionally causes fatal disease in cattle. (05 Mar 2000) |
| Theileria orientalis | A bovine species found worldwide which, in some regions, has been reported to cause clinical disease in cattle. Synonym: Theileria sergenti. (05 Mar 2000) |
| Theileria sergenti | A bovine species found worldwide which, in some regions, has been reported to cause clinical disease in cattle. Synonym: Theileria sergenti. (05 Mar 2000) |
| Theileria taurotragi | A species that causes benign bovine theileriosis, and is infective to sheep and goats; transmitted by Rhipicephalus pulchellus in Africa. (05 Mar 2000) |