Easily prepared and inexpensive culture medium for the isolation of Pasteurella multocida and Bordetella bronchiseptica from the nares of laboratory rabbits was prepared by incorporating 2 micrograms/ml clindamycin into standard blood agar. Using this medium, the time and materials required to identify and isolate Pasteurella multocida was substantially reduced with only a slight loss in sensitivity. The combination of 2 micrograms/ml clindamycin and 4 micrograms/ml neomycin was effective in isolating Bordetella bronchiseptica from rabbits.