Adult human skeleton contains approximately 206 bones. Birth contains 270 bones, which decrease to 206 with age. Skull contains 23 bones, head has 29 bones including middle ear. Axial skeleton consists of 80 bones, appendicular skeleton 126
Sharks shed approximately 35,000 teeth in their lifetime. Teeth contain resistant calcium phosphate materials. Teeth are counted along jaw rows and series inward. Young sharks can replace teeth weekly
Hip bone consists of ilium, ischium, and pubis, forming pelvic girdle. Two hip bones join at pubic symphysis, connected to sacrum at sacroiliac joint. Each hip bone connects to femur through ball and socket joint. Pelvic brim runs along pubic symphysis and sacral structures
Snake skeleton consists primarily of skull, vertebrae, and ribs. Skull has complex joints for swallowing prey larger than head. Typical skull has solid ossified braincase with movable quadrate and maxillary arches. Various skull modifications exist among different snake genera
Two quadrilateral bones forming sides and roof of neurocranium. Located near midline of skull, posterior end. Each bone has two surfaces, four borders, and four angles
Dogs have 320 bones and 700 muscles in their bodies. Size and shape of dogs can influence their behavior. Toy breeds mature skeletons in 6 months, giant breeds take 18 months-2 years