Animals Grow and Change by Denise Carroll

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Animals Grow and Changeby Denise Carroll
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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?
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Animals with Bones

• Mammals
• Reptiles
• Amphibians
• Fish
• Birds

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Mammals

• 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.

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More Mammals
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Reptiles

• 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.

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More Reptiles
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Amphibians

• 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

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More Amphibians
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Fish

• 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

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More Fish
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Birds

• Have wings and beaks
• Are the only animals that
• have feathers
• Lay eggs with shells
• Use their wings to fly

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More Birds
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Animals without Bones

• Insects
• Worms
• Snails
• Starfish

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Insects

• Have 3 body parts
• Have 6 legs
• Many have 2 or 4 wings
• Have 2 antennas

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Is a spider an insect?
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Spiders are not insects.

• Spiders only have two body parts.
• Spiders have 8 legs.

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What Is a Life Cycle?

• 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.

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Life Cycle of a Frog
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Life Cycle of a Butterfly
egg
Larva (caterpillar)
Adult butterfly
Pupa (chrysalis)
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Life Cycle of a Mealworm
egg
larva
beetle
pupa
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Congratulations!

• You are an expert on animals and their life
  cycles.

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Resources

• http//images.search.yahoo.com
• http//office.microsoft.com/clipart