VERTEBRATESAnimals with backbones

Animals with backbones or vertebrates are classified into 5 subgroups. Fish is the largest of vertebrates.

FISHBreathe through a set of gills

Covered with hard scalesReproduce by laying soft, non-shelled eggs

Cold blooded

FISH

AmphibiansBreathe through gills while young

Develop and breath through lungs as adults

Covered in skinLay soft shelled eggsCold bloodedInclude frogs, salamanders, toads

Salamander

SALAMANDER

FROGS

REPTILESThey have lungsCovered with ScalesLay hard shelled eggsCold bloodedSome have shellsLizards, snakes, turtles, crocodiles, alligators

Alligators and Crocodiles

Turtles and lizards

SNAKES

BIRDSHave lungsHave feathersLay hard shelled eggsWarm BloodedLight hollow bones

BIRD

OSTRICH

MAMMALSHave lungsHave hair or furHave live birthsProduce milk Warm blooded

MAMMALS

BOTTLED NOSE DOLPHIN

WHALES