Of course not.Dont forget the fish and snakes.
There are a total of 120 bones in all four limbs (30 bones in each arm and 30 bones in each leg).
No :)
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.
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.
No, animals have only two humeri (large bones in the forelimbs).
The term that refers to animals with four limbs and moveable joints is "tetrapods." Tetrapods include a variety of vertebrates such as amphibians, reptiles, birds, and mammals. This group evolved from fish ancestors and adapted to life on land, characterized by their paired limbs that facilitate movement.
depends, most have 4 but some like snakes actually have 2 stubs ( long gone legs) All vertebrates on Earth(life with spines, bones, etc) with limbs have four limbs with two exceptions: Sirens (a variety of salamander) and the Mexican Mole Lizard, which have only two front limbs and no hind limbs.
Yes, they have four legs (so they have four 'limbs').
Of course not.Dont forget the fish and snakes.
The term that refers to animals with four limbs and movable joints is "tetrapods." Tetrapods include a wide range of vertebrates, such as amphibians, reptiles, birds, and mammals. They are characterized by having two pairs of limbs that are adapted for various forms of locomotion. This evolutionary adaptation has allowed tetrapods to thrive in diverse environments on land and in water.
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No, not every animal has a backbone. Only animals that belong to the phylum Chordata have backbones, while insects and mollusks do not.