A dog with a lesion in the left elbow area and presence of purulent materials was referred to hospital;history, clinical examination, laboratory test and radiological evaluation of the dog proved the presence of osteomyelitis. Eosinophilia was evident by haematologic test. Intensive antibiotic, anti-inflammatory medication, local wound management and restricted physical activity, improved osteomelitis condition and reduced eosinophil number. Therefore it seemed that osteomyelitis was the cause of eosinophilia in this dog.
		                        		
		                        		
		                        		
		                        			Animals
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		                        			Dog Diseases/*blood/therapy
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		                        			Dogs
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		                        			Eosinophilia/etiology/*veterinary
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		                        			Male
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		                        			Osteomyelitis/complications/*veterinary