the cholecystitis is a gall-bladder inflamatory patology, the obstruction and biliar infection could be the principal causes of presentation. the diagnosis is dificult because the clinical signs as clinicopatological abnormalities are inespecifics, so the ultrasonography is a important method of diagnosis, because the visualization of thickeny of the gall-bladder’s wall or hiperecogenic bile induce to suspect cholecystitis. the bile culture and antibiograma permit to define the specific antibiotic treatment. a clinic case is described to emphasize the importance of ultrasonography in the canine cholecystitis diagnosis.
