A nodular mass on the left flank of a 6.5-year-old female Teckel was surgic
ally removed and histologically examined. Granuloma formation with degenera
te collagen and an extensive infiltration of eosinophils, mast cells, lymph
ocytes and histiocytes was observed, microscopically. These findings are ch
aracteristic of canine eosinophilic granuloma or canine collagenolytic gran
uloma. To our knowledge, this is the first reported case in a Teckel.