Snakes
Fish, amphibians, reptiles, birds and mammals. Fish are ecothermic, aquatic vertebrates. Amphibians and reptiles are ectothermic vertebrates. Birds and mammals are endothermic vertebrates.
ecothermic
Reptiles and amphibians are the vertebrates that have three-chamber hearts.
Vertebrates
They're not vertebrates - they're invertebrates - because they have no internal skeleton.
That is actually not true. The vast majority of animals, including vertebrates and invertebrates, are insects. All insects live on land. As for vertebrates, three of the seven classes are types of fish, and fish species equal the number of terrestrial vertebrate species, at approximately 32,000 types of fish compared with 10,000 reptiles, 10,000 birds, 5,000 mammals, and 7,000 amphibians.
All fish are vertebrates.
All dinosaurs are vertebrates.
birds dum one
They are Ecothermic so their temp. depends on their surroundings
The two main types of animals are vertebrates, and invertebrates. This is classified as animals with a back bone (vertebrates), and animals without a back bone (invertebrates).
Well there are four Mammals, Fish, Amphibians, and Reptiles