Antibodies to Neospora caninum were detected in 5 (10%) of 52 coyotes from Texas. Antibodies to Toxoplasma gondii were detected in 32 (62%) of 52 samples from these same coyotes. Four (80%) of the 5 coyotes that were seropositive for N. caninum also had antibodies to T. gondii. Nineteen (37%) of the coyotes did not have antibodies to either parasite. Three coyote pups were inoculated with the brains from mice infected with 3 strains of N. caninum originally isolated from dogs. None of the pups developed neosporosis or excreted N. caninum oocysts in their feces. The pups developed anti-N. caninum antibody titers of > or = 1:800 but did not develop antibodies to T. gondii. Results of this study indicate that antibodies to T. gondii are more common than antibodies to N. caninum in coyotes. Additionally, young coyotes appear to be resistant to experimental N. caninum infection.

HistoryAn 18-month-old 5.18-kg (11.4-lb) neutered male domestic shorthair cat kept predominantly indoors was evaluated because of lameness and unwillingness to jump of 5 days' duration. Extensive swelling of the right pelvic limb from the hip region to the digits was evident. A 6-cm-diameter abscess (containing 3 mL of purulent fluid) was present in the lateral and caudal thigh area, affecting the biceps femoris, semitendinosus, and semimembranosus muscles and overlying skin. A foreign body was not identified on surgical exploration of the abscess. The cat' s vaccination status was reportedly current, including vaccination against FeLV. Three days later, a second abscess (5 cm in diameter) was detected over the right dorsolateral portion of the sacrum. Surgi-

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