Dogs Skeletal System
A dog's skeleton has an average of 319 bones, which is about 100 more bones than humans. Dogs have the greatest variety in the size and configuration of their skeletons of any species of animal. Even though the tiny Chihuahua has the same number and type of bones as the Great Dane, the size and shape of their bones are very different. The biggest differences (other than sheer size) are in the bones of the skull. A dog’s shoulder blades are not tightly connected to its skeleton, so the dog has potential for greater motion and flexibility.
Cats Skeletal System
Cats have seven cervical vertebrae like almost all mammals, thirteen thoracic vertebrae (humans have twelve), seven lumbar vertebrae (humans have five), three sacral vertebrae (humans have five because of their bipedal posture), and, except for Manx cats and other shorter tailed cats, twenty-two or twenty-three caudal vertebrae (humans have three to five, fused into an internal coccyx). The extra lumbar and thoracic vertebrae account for the cat's enhanced spinal mobility and flexibility, compared to humans. The caudal vertebrae form the tail, used by the cat as a counterbalance to the body during quick movements.
Unlike human arms, cat forelimbs are attached to the shoulder by free-floating clavicle bones, which allow them to pass their body through any space into which they can fit their heads.
Skull
The cat skull is unusual among mammals in having very large eye sockets and a powerful and specialized jaw.
Compared to other felines, domestic cats have narrowly spaced canine teeth, adapted to their preferred prey of small rodents.
Unlike human arms, cat forelimbs are attached to the shoulder by free-floating clavicle bones, which allow them to pass their body through any space into which they can fit their heads.
Skull
The cat skull is unusual among mammals in having very large eye sockets and a powerful and specialized jaw.
Compared to other felines, domestic cats have narrowly spaced canine teeth, adapted to their preferred prey of small rodents.