A 13-month-old German shepherd dog was presented with acute onset of a
norexia, pyrexia, lymphadenopathy, and tonsillitis. Tularemia was diag
nosed based on a greater-than-fourfold increase in antiFrancisella tul
arensis antibody titers over a three-week period. The disease was self
-limiting, and clinical signs resolved within five days with only supp
ortive therapy.