Spinal and extraspinal manifestations similar to Forestier's disease, or disseminated idiopathic skeletal hyperostosis (DISH), are described in a 4-year-old female Great Dane dog. Radiographic features included linear new bone formation with a smooth wavy contour along the ventral and lateral aspects of vertebral bodies plus hyperostosis at ligamentous attachments in the spine (enthesiophytes) causing bony ankylosis. Periarticular new bone and enthesiopathy were present in extraspinal locations. Clinical signs possibly relate to limitations in motion because of the vertebral fusion and extraspinal arthrosis.

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