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Vertebrates are the most advanced creatures on the planet. All animals in this section are characterized by the spinal cord, vertebrae and notochord. It's all about the back side (back side) with a series of nerves. If you are an organism, you just can not have the nerve sitting there. You need to give those nerve support and protection. This necessity will bring us to the cartilage rod called the skeleton and notochord

There are 50,000 kinds. There are not many species of vertebrate compared with invertebrates. You may ask why. One reason is that vertebrates are usually larger than invertebrates. They need more space. Another reason is that it is more sophisticated, but there are many restrictions on the environment that can be used.

Please think like this. If you are a smart mammal, do you live near the Arctic sea or frozen tundra? Many land animals make decisions and can move to more desirable houses. Those better areas can only support so many animals

Vertebrates are very smart. Some of them are very smart. We mean you Most vertebrates have very advanced nervous system. Goldfish may not be in balance with your intelligence, but when you compare goldfish and anemone, goldfish is like Einstein. Octopus is probably the smartest invertebrate and may be as good or better than some vertebrates. Octopus is an exception to the invertebrate category

A further characteristic of vertebrates is having muscles and tendons. Materials may be different, but the muscles allow vertebrates to move very efficiently and make complex movements. The ability to move and subsequent intelligence will dominate vertebrates such as reptiles and birds in the natural world.

Vertebrates / vertebrates contain all species of animals under the spine. Vertebrates occupy the majority of notochord and now about 66,000 species are listed. Vertebrates include jawless and crouching vertebrates, including cartilaginous fish (sharks, rays, mice) and bone fish. Quadruped animals also include teleost fishes known as leaf finfish which are divided into amphibians, reptiles, birds, and mammals. The size of existing vertebrates is up to 33 m (108 ft) from the frog species Paedophryne amauensis, only 7 mm (0.30 in) to blue whale. Vertebrates occupy less than 5% of all animal species, the rest are invertebrates without vertebrae.

Traditional classification is based on the traditional interpretation of anatomical and physiological characteristics and classifies living vertebrates into seven categories. This classification is the most common classification of school textbooks, overview, non-professional and popular works. The existing vertebrate animals are as follows: Although this traditional classification is neat, most groups are of the same species, ie all descendants without common ancestor of the class. For example, the first reptile descendants include contemporary reptiles, and mammals and birds. Most of the categories listed are not "complete" (thus proxy) classifications. That is, not all descendants of the first representative of the group are included.