Vertebrates and invertebrates

Organisms with backbone and organisms without backbones

Jawless fish

Jawless fish are fish without jaws and have no scales. They grab or scrap there food to eat. Instead of bones they have cartilage.

Examples: hagfish, and a lampray.

Bony fish

Bony fish have jaws,gills, and scales. They make up of 95% of all fish species.

Examples: seahorse,clown fish, and trout.

Bony fish

Cartilage fish

Cartilage fish have jaws,scales, and the skeleton is made up of cartilage.

Examples: sharks,stingrays, and skates,



Amphibians stay on land then they go in the water to reproduce.

Examples: frogs, and salamander


Reptiles are cold blooded, lay eggs, have lungs, and have scaly skin. Snakes, lizards, alligator, crocodile they are all reptiles but they are all still different. Lizards have four legs,claws,two lungs, and have moveable eye lids. But snake have no legs, no eye lids, and they slither to move.

Examples: alligator, crocodile, snake, lizards.


Did you know that there are over 10,000 species of birds, and only over 40 species can't fly? Birds are warm blooded. Have you ever seen a bird on the side of the road eating gravel? The birds are swolo the gravel to help eat. Then the birds go find a worm to eat then they swolo the worm, the gravel smaskes the worm into tiny pieces. Last the worm goes into the stomach and goes throught the digestive system. They do this because birds do not have teeth.


Mammals are warm blooded.some examples of mammals are kangaroo, mice, and dolphins. You may of here that all mammals have live birth, but not all do. Platypus are mammals but they still have eggs.