VERTEBRATES Animals with backbones
Animals with backbones or vertebrates are classified into 5 subgroups. Fish is the largest of vertebrates.
FISH • Breathe through a set of gills • Covered with hard scales • Reproduce by laying soft, non-shelled eggs • Cold blooded
Amphibians • Breathe through gills while young • Develop and breath through lungs as adults • Covered in skin • Lay soft shelled eggs • Cold blooded • Include frogs, salamanders, toads
REPTILES • They have lungs • Covered with Scales • Lay hard shelled eggs • Cold blooded • Some have shells • Lizards, snakes, turtles, crocodiles, alligators
BIRDS • Have lungs • Have feathers • Lay hard shelled eggs • Warm Blooded • Light hollow bones
MAMMALS • Have lungs • Have hair or fur • Have live births • Produce milk • Warm blooded