Classification and characteristics of scientific animals with examples Just write examples\ amphibious crawl Birds lactation fish

Classification and characteristics of scientific animals with examples Just write examples\ amphibious crawl Birds lactation fish

The one above, don't teach me. The tortoise is a reptile!
There are phylum, class, order, family, genus and species
In general, there are invertebrates and vertebrates
The former includes many, many: annelids (earthworms, leeches, etc.), flatworms (pork tapeworms), molluscs (snails, mussels), arthropods. Arthropods are a large group, divided into spiders (spiders), crustaceans (shrimp, crab), insects (ants, butterflies, grasshoppers, dragonflies, longicorn)
Vertebrates: fish, amphibians (frogs, salamanders, etc.), reptiles (turtles, lizards, and extinct dinosaurs), birds, mammals
In fact, the above statement is not accurate to a certain extent, and can only be used as popular science knowledge. Each group can be further divided many times!