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.
Animals without backbones are called invertebrates.
Invertebrates.
Exoskeletons
animals with no back bones
Animals with no backbones are called invertebrates and they include insects, worms, spiders along with soft bodied animals such as sponges, sea anemones and jellyfish.Invertebrates are the animals without back bones.
Animals with back bones are known as vertebrates
Back Bones
animals with back bones
Yes
mammals
Invertebrates.
Mollusks are invertebrate animals. This means they have no vertrebral column, or back bone.