Animals are separated into
groups or categories so that
they are more easily studied
and discussed by scientists
and others.
Classification?
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 lear
ners.
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.
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.
Reptiles
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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