Phenotype of the inherited disproportionate dwarfism.

(A) Photograph of a female affected Labrador Retriever. Notice the relatively long body in relation to the length of the legs. (B) Affected mother (left) with her non-affected daughter (right). The affected dog has shorter forelegs. (C) Photograph of three littermates. The affected male has short legs and different proportions compared to his non-affected sister. (D) Radiograph of the left front limb of a male control Labrador Retriever and (E) his affected full brother at 12 months of age. In the affected dog ulna and radius are 2.7 cm and 1.9 cm shorter and slightly more bent than in the control, respectively. The diameter of the diaphysis of the long bones is not affected (Table S1).