Real dog spine with cervical, thoracic, lumbar, sacrum, and head. Flexibly mounted.Domestic Dog (Canis lupus familiaris)Taxonomy:Class: MammalsOrder: PredatorsFamily: DogsDiet: CarnivoreSize: Approx. 20 " 85 cmWeight: Approx. 1 " 70 kgAge: 7 "18 yearsSkeleton: Approx. 280 individual bonesDentition formula:Number: 42Incisors (I): 3/3Canines (C): 1/1Premolars (P): 4/4Molars (M): 3/3