Poodle throughout, although most AKC-registered show dogs have a lion-cut or other, similarly shaven look. The sizes of the official AKC-recognized Poodle breeds are determined by height, not by weight. Poodles are bred in a variety of sizes, distinguished by adult shoulder (withers) height. The exact height cutoffs among the varieties vary slightly from country to country. The Fédération Cynologique Internationale (FCI) recognizes four sizes of one breed: standard, medium, miniature, and toy. Non-FCI kennel clubs generally recognize three sizes, standard, miniature, and toy, sometimes as sizes of the same breed and sometimes as separate breeds. Only the FCI describes a
Dog anatomy as the German Shepherd Dog, are called mesocephalic and dogs with a pushed in muzzle, such as the Pug, are called brachycephalic. Today's toy breeds have skeletons that mature in only a few months, while giant breeds, such as the Mastiffs, take 16 to 18 months for the skeleton to mature. Dwarfism has affected the proportions of some breeds' skeletons, as in the Basset Hound. All dogs (and all living Canidae) have a ligament connecting the spinous process of their first thoracic (or chest) vertebra to the back of the axis bone (second cervical or neck bone), which supports the