1. Classification of Animals
All animals classify in to
two major groups.
 Vertebrate: Animals having back
bone
 Invertebrates: Animals do not
have back bone

2. There are five groups of
Vertebrates
 Fish
 Amphibians
 Birds
 Mammals
 Reptiles

3. Fish

Are cold-
blooded
 Have gills and
scales
 Live in water
 Have a
Backbone

4. Reptiles
 Have scales
 Live on land
 Are cold-blooded
 Usually lay eggs
 Have a Backbone

5. Amphibians
 Live in water and
on land
 Are cold blooded
 Have smooth skin
 Lay eggs
 Have a Backbone

6. Birds
 Have feathers
 Are warm-blooded
 Have hollow bones
and most can fly
 Lay eggs
 Have a Backbone

7. Mammals

Have hair or fur
 Are warm-blooded
 Feed milk to their
young
 Have a Backbone

8. Review
Animals without Animals with backbones
Backbones are are called
called invertebrates: vertebrates
Sponges
Anemones and Jellyfish Fish
Worms
Reptiles
Snails, Clams and
Octopuses Amphibians
Starfish and Urchins Birds
Insects, Spiders, Ticks, Mammals
Lobsters, Crabs, and
Crayfish