No, not every animal has a backbone. Only animals that belong to the phylum Chordata have backbones, while insects and mollusks do not.
Most vertebrates or animals with backbones have four limbs. Some vertebrates have two limbs while others, like snakes, have none at all.
Because tetrapods (4 limbed animals) all evolved from the same chordate ancestor, and so all have backbones.
Most macroscopic organisms do have limbs. Microscopic organisms, such as bacteria and protoplasms, generally do not.
Yes they do....
For certain all higher animals do. It also depends on your meaning of limbs. But, all Chordata have a backbone. Only Vertebrate that does not have limbs, if your are defining limbs to be legs and arms, are the fish. The term use to describe 4 limbed animals is tetrapod.
ducks
Example of vertebrates (having a spinal column) could be humans, whose fore limbs are arms, as we stand upright. Then there are animals like the horse, whose fore limbs (indeed all four limbs) are actually legs.
They both breath oxygen, drink water, have 4 limbs, and eat live animals.
Millipedes have the most limbs.
For certain all higher animals do. It also depends on your meaning of limbs. But, all Chordata have a backbone. Only Vertebrate that does not have limbs, if your are defining limbs to be legs and arms, are the fish. The term use to describe 4 limbed animals is tetrapod.
no sea creatures have limbs and the other animals and humans have legs
No,they can't.
Prosthetic limbs have not just helped people but they are very helpful for animals too. Animals without limbs have a hard time moving around, they actually have it worse then people because without one limb they can basically not move at all. Most animals will die if they do not have a limb because they can not hunt for food or if they are prey they can not get away. Prosthetic limbs help animals to do this stuff so they are not immobile or constantly dysfunctional
Like all animals, the limbs of a dragon could be legs, arms, and/or wings, depending on their function. Tails do not count as limbs in most cases.
hi
They are similar. Prosthetic limbs for both humans and animals are made of the same types of material and are used for similar reasons. However, the design of dog's prosthetic limb is very different from the design for a human's prosthetic limb. Also, prosthetic limbs for animals are much less common than they are for humans.
Jointed limbs are an important development because they allow animals, including humans, to move. Without joints we would be comprised of an immobile skeleton.
ducks
It depends on the type of animal, mammals and some types of fish will swim and sea bed animal will walk alone the sea bed e.c.g crabs, moluscs.
A turttle.
Of course not.Dont forget the fish and snakes.