A presumptive diagnosis of buttercup toxicosis with photosensitization secondary to hepatotoxicity was made in an 18-mo-old Charolais heifer. The differential diagnosis included salmonellosis, aflatoxicosis, bovine virus diarrhea, internal parasite infestation, and plant toxicosis with either
METHODS
Unexplained clinical signs of weight loss and emaciation were reported in a herd of Thoroughbred horses grazing spring pastures on a central Kentucky farm, even though supplemental grain and hay were provided.
RESULTS
A buttercup plant, Ranunculus bulbosus L, was abundantly present in all