Authors reported clinical and anatomopathological syndroms of an athypical diarrhea in blue and silver foxes on the farm. More than 50% of young animals were sick and 20% of them died within 2 weeks. Campylobacter jejuni was isolated on differential medium incubated at 43°C. Animals were treated with gentamycin (8 mg per day) and mineral premix with bentonite. During the recovery period increase of the meet up to 80% in the food was recommended.