they do not some of the amphibians belong to the class amphibia
NO!
They are all vertebrates, and the reptiles and amphibians belong to the tetrapods because they have four legs.
All turtles are reptiles. All Frogs are amphibians.
No, not in a straight forward traditional classification sense... Amphibians = class Amphibia Reptiles = class Reptilia Bird = class Aves Mammals = class Mammalia They can be categorized all together in the "superclass" Tetrapoda.
Turtles (reptiles) are close to humans and frogs (amphibians) http://abacus.gene.ucl.ac.uk/will/files/TreeOfLife.pdf
Chickens belong to the class Aves, which includes all birds.
the alligator belongs to the reptilia class (reptiles). there are about 22 species of crocodilians (crocodiles, alligators, caimans, and gharals).
No, although all snakes come in the class "reptillia".
All frogs are vertebrates. They belong to the group of animals known as amphibians, all of which are vertebrates.
Poison arrow frogs are amphibians, and all amphibians are vertebrates. They have a spine and spinal cord, and an internal skeleton. They belong to the Phylum Chordata. Mammals, birds, fish, reptiles and amphibians are all vertebrates.
Organisms such as toads are amphibians, and all amphibians belong to the taxonomic domain of Eukarya, members of which are characterised by having cells with nuclei. Eukarya covers all organisms in the Kingdom Animalia, as well as the Kingdoms Plantae, Fungi and Protista.
All rhinoceros belong to the class Mammalia.