If animals did not have bones, they would be shapeless blobs that could not change location. Therefore, not being able to get food and thus dying.
to walk
If they didn't have bones, they would be like water.
Teeth because all animals need to chew their food.
Some animals have no need of them, jellyfish for instance. Others have an exoskeleton, insects are an example.
Invertebrate animals are animals that have NO bones, such as crabs. Vertebrate animals are animals that HAVE bones, such as dogs.
Because They Need To Hold Up Their Weight
All animals have bones.
It depends on which animal you are talking about. Some animals without bones are larger than animals with bones. Compare the Giant Pacific Octopus with a mouse.
Most carnivores get their calcium via chewing on bones of their latest prey.
Animals with back bones are known as vertebrates
Birds have pneumatic bones.
No Bones are in animals Carrots are vegetables