This class has hair or fur and is the ONLY vertebrate that feed milk to their young.

• Fish

• Amphibians

• Insects

• Mammals

This classification has dry scaly skin.

• Mammal

• Reptile

• Amphibian

• Fish

This classification has feathers and wings.

• Reptile

• Mammal

• Bird

• Fish

This classification has scales.

• Fish

• Mammal

• Bird

• Reptile

Tags

NGSS.MS-LS4-2

This classification does NOT breath air with lungs.

• Mammals

• Fish

• Bird

• Reptiles

This classification uses gills to get oxygen from water.

• Bird

• Reptile

• Mammal

• Fish

This classification starts out with gills and then transitions to lungs as an adult.

• Bird

• Reptiles

• Amphibians

• Fish

Tags

NGSS.MS-LS4-2

This classification gives live birth.

• Mammal

• Fish

• Bird

• Amphibian

This classification hatches from leathery eggs.

• Bird

• Mammal

• Reptile

• Fish

This classification hatches from hard-shell eggs.

• Bird

• Mammal

• Reptile

• Amphibian