4th Grade Science
Paige Ferry
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Click on an
animal to
learn about
the group it
represents!
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o Fish live in water. Fish can live in either saltwater or
freshwater depending on their environmental needs.
o Fish are cold-blooded, meaning their internal body
temperature changes as the surrounding temperature
changes.
o Fish have gills which bring in oxygen from the water
around them.
o Fish are covered in slimed covered scales which help
them move easily in the water.
o Fish eat other fish, fish eggs, mollusks, aquatic plants,
algae, plankton, insects, water birds, turtles, frogs, snakes
and mice.
o Fish have been on the earth for over 500 million
years…that’s even before dinosaurs!!!
o There are believed to be over 29,000 species of fish which
makes them the most diverse grouping of vertebrates!
o There are believed to be over 29,000 species of fish which
makes them the most diverse grouping of vertebrates!
o There are more species of fish than of all species of
amphibians, reptiles, birds and mammals combined!
Click to view
some fish!
Angelfish
Goldfish
Guppy
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Shark
o Most Amphibians live in or around freshwater
habitats such as swamps, ponds, or damp
environments, although some have adapted
themselves to survive on trees, rocks or underground.
o Amphibians start their life in water with gills and tails.
They then go through metamorphosis- or change- in
which they develop lungs and legs for their lives on
land.
o Amphibians have webbed feet.
o Amphibians have soft, smooth, mucus-covered skin
and sticky tongues which help them catch prey.
o Like fish, amphibians are also cold blooded.
o Amphibians are carnivorous. They feed on spiders,
worms, insects , crustaceans, small reptiles and
smaller amphibians.
o There are close 8,240 different kinds of amphibians
including frogs, toads, salamanders and blindworms.
o Amphibians lay eggs in either water or moist areas
such as cracks in the ground.
Click to view some
amphibians!
Common Frog
Gold Striped Salamander
Morrocan Green Toad
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Newt
o Reptiles generally live on land, usually in dry and
warm places. Although some may live in water, water
is not needed for developmental nor reproduction
reasons.
o Reptiles include snakes, alligators, crocodiles,
tortoises and lizards.
o Reptiles are cold-blooded.
o Reptiles have lungs which they use to breathe.
o Most reptiles are carnivorous and they usually
swallow their prey whole. They eat insects, other
reptiles, and small mammals.
o There are more than 8,000 species of reptiles.
o One physical feature that all reptiles have in common
is dry, glandless skin which is covered by scales which
protect the body of the reptile.
o Most reptiles lay eggs.
o The first reptile is believed to have evolved 320
million years!
Click to see some
reptiles!
Lizard
Turtles
Komodo Dragon
Snakes
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o Birds have feathers, wings and beaks, but
no teeth.
o Birds lay eggs.
o Birds are warm blooded,
o There are over 10,000 different species of
birds
o Scientists believe that birds evolved from
theropod dinosaurs!
o Birds have hollow bones which help them
fly.
o The chicken is the most common species
of bird in the world!
o Hummingbirds can fly backwards.
o 75% of birds die before they are 6 months
old.
o Migrate in winter to warmer climates.
Click to see
some birds!
Bald Eagle
Dove
Flamingo
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o Mammals live in all kinds of environments. The ocean,
underground, and on land.
o Some mammals such as bats can fly.
o Mammals are warm-blooded.
o Mammals have fur or hair.
o Mammals have milk-producing glands.
o Most mammals have teeth.
o Mammals give birth to live young.
o Mammals include humans, dogs, whales, elephants and
horses to name a few.
o Mammals can be carnivores (polar bears), herbivores
(cows) or omnivores (humans).
o Mammals can give birth to live young (humans and
tigers), carry their young in a pouch (kangaroo and koala
bear) or lay eggs (platypus and anteater).
Click to see some
mammals!
Dolphin
Chimpanzee and White Tiger Cub
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Zebra
Panda Bears
Which animals are warm-blooded?
a) Mammals and Reptiles
b) Mammals and Amphibians
c) Mammals and Birds
Back to question
Both mammals and birds are warm-blooded
animals. Being warm-blooded means that
their temperatures are internally regulated.
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