Animal Classification Basics

Front

Mammals

Back

Warm-blooded, have hair, live birth

Front

Birds

Back

Feathers, lay eggs, beaks

Front

Reptiles

Back

Cold-blooded, scales, lay eggs

Front

Amphibians

Back

Live in water and land, moist skin

Front

Fish

Back

Gills, live in water, scales

Front

Invertebrates

Back

No backbone, diverse group

Front

Arthropods

Back

Exoskeleton, segmented body

Front

Mollusks

Back

Soft body, some have shells

Front

Echinoderms

Back

Spiny skin, radial symmetry

Front

Cnidarians

Back

Stinging cells, aquatic