Animals Grow and Change
by Denise Carroll
What do animals need to
live and grow?
Fresh air
 Food
 Water
 Shelter
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Animals are separated into groups so they
are easier to study.
Can you put these animals in groups?
Animals with Bones
Mammals
 Reptiles
 Amphibians
 Fish
 Birds
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Mammals
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Have fur or hair
Give birth to live babies
Have only a few babies at a time
The female feeds the young milk from
her body
The young are taken care of for a long
time
People, dogs, horses, cows are
mammals.
More Mammals
Reptiles
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Have scales
Skin is rough and dry
Lay eggs with leathery shells
Most live all their life on land
Lay their eggs on land
Lizards, snakes, turtles, and alligators
are examples.
More Reptiles
Amphibians
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Hatch from eggs laid in water
When young, they look like fish and have
gills like fish.
They grow legs.
Gills are replaced by lungs.
They can live on land when older.
They can stay underwater for a long time.
Frogs, toads, salamanders, and newts are
examples
More Amphibians
Fish
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Live in water
Most have scales and fins
Use their fins to move through the
water
Use gills to breathe
Some live in fresh water, others live in
salt water
More Fish
Birds
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Have wings and beaks
Are the only animals that
have feathers
Lay eggs with shells
Use their wings to fly
More Birds
Animals without Bones
Insects
 Worms
 Snails
 Starfish
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Insects
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Have 3 body parts
Have 6 legs
Many have 2 or 4 wings
Have 2 antennas
Is a spider an insect?
Spiders are not insects.
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Spiders only have two body parts.
Spiders have 8 legs.
What Is a Life Cycle?
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A life cycle is the
stages that occur in
a plant or animals
lifetime.
A life cycle is a
circle that has no
end, one life ends
and one always
begins.
Plant Life
Cycles
Animal Life
Cycles
Show how
they grow
and change.
Life Cycle of a Frog
egg
Adult butterfly
Life Cycle
of a
Butterfly
Pupa
(chrysalis)
Larva
(caterpillar)
egg
beetle
Life Cycle
of a
Mealworm
pupa
larva
Congratulations!
You are an expert
on animals and
their life cycles.
Resources
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http://images.search.yahoo.com
http://office.microsoft.com/clipart