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The average dog has 26 vertebrae. 7 cervical, 13 thoracic, and 6 lumbar. Some breeds such as the English Bulldog may frequently have a 7th lumbar vertebra, or a portion of a vertebra called a transitional vertebra. The average dog has 26 vertebrae. 7 cervical, 13 thoracic, and 6 lumbar.
The cervical spine reliably has seven vertebrae in humans (1,2). We counted the first seven vertebrae as cervical vertebrae (cervical ribs were not documented), with the rib-bearing vertebrae below these labeled as thoracic vertebrae and the nonârib-bearing vertebrae below these labeled as lumbar vertebrae.