Beschreibung:
<jats:p>A seven‐month‐old male cane corso was presented to our emergency clinic, with severe left hind lameness. The combination of history, physical examination, radiographs and cytology of the left stifle raised a suspicion of a septic monoarthritis. Bacteriology of the synovia confirmed an infection with <jats:italic>Pasteurella dagmatis. Pasteurella</jats:italic> species are frequently associated with skin disease and often isolated from dog bite wounds in humans. Isolation of <jats:italic>P dagmatis</jats:italic> only incidentally occurs and its frequency might be underestimated due to laboratory misidentification. Its pathogenicity remains unknown and is presumed to be equal to other <jats:italic>Pasteurella</jats:italic> species. However, in humans, this organism is associated with more serious disease, which might potentially also be the case in our patient. To the author’s knowledge, this is the first case report of a monoculture of <jats:italic>P dagmatis</jats:italic> isolated from the joint of a dog.</jats:p>