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Essential Question
• How are animals classified?
Vocabulary to know:
• Classification
• Vertebrate
• Invertebrate
Classification?
 Animals
are separated into
groups or categories so that
they are more easily studied
and discussed by scientists
and others.
Two Main Animal Groups
• The two main groups of animals are
vertebrates and invertebrates.
Invertebrates
• They tend to be small because they do not
have a backbone to support their bodies.
Many invertebrates live in the ocean,
where the water helps support their
weight.
What other things are
invertebrates?
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Worms
Snails
Sponges
Crabs
Lobster
Shrimp
Clams
Cockroaches
Spiders
Vertebrates
They are animals that have backbones, such as
a tiger or you! They can be as different as frogs
and elephants. This large group of animals is
divided into five smaller groups. Vertebrates
tend to be much bigger than invertebrates.
The 5 groups of vertebrates
 Mammals
 Fish
 Birds
 Reptiles
 Amphibians
Mammals
Characteristics:
 Have
teeth
 Have hair
 Are warm blooded
 Have a single jaw bone
 Have inner ear bones
 Produce milk for their young
Mammals
 Mammals
have larger brains and
seem to be the most capable
learners.
 All mammalian mothers nourish
their babies with milk.
Fish
Characteristics:
 Are
cold-blooded vertebrate
(backbone)
 Live in water
 Usually have paired fins, gills, and
scales
Fish
 Most
fish lay large numbers of
eggs, but some have live birth.
 Most
fish breathe by drawing
water over four or five pairs of
gills.
Amphibians
Characteristics:
 Are
cold-blooded vertebrate
(backbone)
 Lay their eggs in water
 Lack any skin coverings such as
fur, scales or feathers
Amphibians
 Young
amphibians tend to resemble
small fish.
 Amphibian means "two lives," a
reference to the change that frogs go
through as they move from egg to
tadpole to frog.
 Even as adults, most frogs and other
amphibians must stay close to water.
Birds
Characteristics:
 Have
feathers
 Lay eggs
 Have bodies specially adapted for
flight
 Have a beak rather than teeth
Birds
 Their
nearly hollow bones
provide lightweight strength.
 Birds now live almost
everywhere on Earth.
Reptiles
Characteristics:
 Have scales
 Lay leathery eggs on land
 Are often called cold-blooded
because they can't regulate their
own body temperature
Reptiles
 Reptiles
do not use energy to fuel
internal "furnaces"
 Although reptiles breathe through
lungs, some reptiles can also
absorb oxygen in water through
their mouth.

If you found a new animal, how
could you classify it?
Does it have a
backbone?
Yes…then it is a vertebrate
No
Then you would study
it’s outer covering, if it
is warm-blooded or coldblooded, it’s way of reproducing
and other characteristics.
It is an invertebrate
Quiz Time!!!!
1. Which animal is an invertebrate?
• A. shark
B. jelly fish
• C. dolphin
D. whale
Which statement is not true?
a. A snake is an amphibian.
b. An alligator is a reptile.
c. An ostrich is a bird.
d. A deer is a mammal.
Which animal is cold-blooded?
a. A penguin
b. A polar bear
c. An eagle
d. A salmon (fish)
Scientists classify animals by…
a. Their names
b. Their roles as prey or predator
c. Their physical characteristics
d. What they usually eat
A shark is a vertebrate
because it…
a. Is cold-blooded
b. Has a backbone
c. Lives in the ocean
d. Lays eggs
How do you know that this
animal is an invertebrate?
a. It has a furry body.
b. It is a spider.
c. It comes from an egg.
d. It is cold-blooded.
Resources

Quia Classification Quiz
Charts: Animal classification, Fish, Bird, Amphibian,
Animals,

The Animal Kingdom

Resources
http://www.nmnh.si.edu/BIRDNET/
http://falcon.jmu.edu/~ramseyil/vertebrates.htm
http://www.edhelper.com/AnimalReadingComprehension_1_1.html
http://www.edhelper.com/animals.htm
http://animaldiversity.ummz.umich.edu/site/index.html
http://anthro.palomar.edu/animal/links.htm
http://www.dowslane.org/reptile.html
http://www.seaworld.org/animal-info/animal-bytes/index.htm
http://www.hhmi.org/coolscience/critters/critters.html
http://www.quia.com/servlets/quia.activities.common.ActivityPlayer?AP_rand
=785616651&AP_activityType=14&AP_urlId=1130&AP_continuePlay=true&i
d=1130

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