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Amphibians are cold-blooded vertebrates that live partly in water and land. These species of animals include toads, frogs, newts, and salamanders.
Arthropods (phylum Arthropoda) are invertebrate animals characterized by an exoskeleton, paired jointed appendages, and a segmented body.
Birds are warm-blooded vertebrates adapted for flight. They are characterized by feathers, beaked jaws without teeth, and the laying of hard-shelled eggs.
Fish are aquatic animals. They are vertebrates (vertebrates have backbones) that live and breathe in water using their unique organ called gills.
Mammals are warm-blooded vertebrates (they have backbones). They share four common traits: hair, mammary glands, a hinged jaw, and three tiny middle ear bones.
Reptiles are cold-blooded vertebrates (they have backbones). They are characterized by dry skin covered with bony plates or scales and egg-laying.