Streptobacillus moniliformis Spirillum minus Salmonella spp. Staphylococcus Leptospira Pasteurella Corynebacterium Fusobacterium: Same as human: Ungulates: Polymicrobial Actinobacillus spp.

The bacteria Streptobacillus moniliformis or Spirillum minus, which are present in rats' urine, saliva, and feces, cause rat-bite fever, or RBF, a serious illness.