Pituitary dwarfism and concurrent hypothyroidism in a Golden Retriever/German Sshepherd cross breed dog

### Signalment and history A 16-month-old male Golden Retriever and German Shepherd crossbreed dog presented with a history of skin disorders. Physical examination findings included stunted growth with normal proportions, prognathism, delayed dental eruption and a downward fold of the tip of the pinnae, bilateral symmetrical alopecia on the proximal extremities, neck, back, tail, sides and ventral surface of the body; hyperpigmentation and lanugo retention were also present (figure 1). Diagnosis of the cause of dwarfism in a canine patient can be a challenge when concurrent developmental abnormalities are present. Radiology is a widely available tool in clinical veterinary practice and is recommended in dwarfism cases. Figure 1 Image of a 16-month-old male Golden Retriever/German Shepherd crossbreed dog presented with stunted growth with normal proportions, downward fold of the tip of the pinnae, bilateral symmetrical alopecia on the extremities, neck, back, tail, sides and ventral surface of the body, hyperpigmentation and lanugo retention were also observed. Radiographical findings were shortened vertebral bodies, widened radiolucent intervertebral space and persistent physis at the level of vertebral bodies (figure 2) and tibia (figure 3). Long bones (humerus, femur and radius) appeared shorter with …