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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