The document classifies all animals into two main groups: vertebrates, which have backbones, and invertebrates, which do not. Vertebrates are divided into five subgroups: fish, amphibians, birds, mammals, and reptiles. Each subgroup is described in one or two sentences, noting key distinguishing characteristics like temperature regulation, habitat, locomotion abilities, and parenting methods.

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