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Science
Animals
Vertebrates
with
backbones
What do snakes, birds, spiders, and cats have in common?
They are animals.
They move.
They reproduce.
They eat other organisms.
They breath
How are they different?
Coverings are different Number of legs are different
Each reproduce differently Body temperatures are different
Not all have a back bone
BACKBONE
A backbone is the main bone, made up of many small bones joined together, that, runs along the middle of the back in some animals.
No Backbones
Out of all the animals, very few have backbones.
Have Backbones
Only 3 out of every 100 have a backbone.
97 out of every 100 do not have a backbone.
Animals with a backbone, an internal skeleton, are
called vertebrates
mammals
vertebratesfish birds reptiles
amphibians
Fish have backbones.
Fish reproduce by laying eggs.
These are the eggs of a clown fish.
Since fish live in water, most of them breathe through gills.
Gills perform the gas exchange between the water and the fish's blood.
Gills allow the fish to breathe oxygen in the water.
Fish are covered with scales.
Fish are cold-blooded.
Cold-blooded creatures take on the temperature of their surroundings.
They are hot when their environment is hot and
cold when their environment is cold.
Birds have backbones.
Birds reproduce by laying eggs.
Birds have lungs to breath.
Birds are covered with feathers which keep them warm and help them fly.
Since bird have hollow bones, they are very light.
Most birds can fly.
They have two feet and two wings
Birds are warm-blooded.
Warm-blooded creatures keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment. To generate heat, warm-blooded animals convert the food that they eat into energy.
Reptiles have backbones
Reptiles breath through lungs.
They are cold-blooded.
Amphibians go through metamorphosis.
They begin life as eggs.
During their larval stage, they live in the water.
Once they reach the adult stage, they live on the land.
The adults must return to the water, however, for reproduction.
Amphibians have smooth, moist skin.
Adult amphibians have small, relatively inefficient lungs for breathing, so most breath through their skin too.
Amphibians lay eggs in the water. Baby amphibians breath with gills.
Amphibians are cold-blooded.
Mammals have backbones
Mammals give birth to live babies.
Baby mammals must be fed and cared for by their parents.
Mammals are warm-blood.
Mammals are covered with hair or fur.
Mammals use lungs to breath.
Animals with a backbone, an internal skeleton are called
vertebrates
Fish, birds, reptiles, amphibians and mammals are
vertebrates
Fish, birds, reptiles, amphibians and mammals have backbones.
Saint William School
Name ___________________________________________________________ Date ______________
Covering Reproduce What organ does it use to
breath?
Is it warm blooded or
cold blooded?
Fish
Birds
Reptiles
Amphibians
Mammals
