Animals are classified into
Vertebrates and invertebrates
Mammals and reptiles
Annelids and mollusks
vertebrates are animals with
More than four legs
A hard outside shell
backbones
Inverebrates are animals without
Legs
Eyes
Backbone
Mammal, reptiles, fish, birds, reptiles and amphibians are
Vertebrates
Invertebrates
Mollusks
Arthropods, echinoderms, annelids, mollusks and crustaceans are
Mammals
Fish
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