Congenital vertebral anomalies, including butterfly, block, and transitional vertebrae, and hemivertebrae, are a collection of malformations of the spine in animals.

• 先天性脊柱畸形，包括蝴蝶椎、脊椎分节不全、椎骨移行、半椎等，指犬只各脊柱骨的形成异常。