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From Grolier’s Interactive Encyclopedia. THE VERTEBRATE ANIMALS. COLD BLOODED: Those animals who have body temperatures that change with the temperature around them. THE FISH. 1. Fish possess gills to allow them to acquire oxygen from the water.
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THE VERTEBRATE ANIMALS
COLD BLOODED: Those animals who have body temperatures that change with the temperature around them.
THE FISH 1. Fish possess gills to allow them to acquire oxygen from the water. 2. Fish all possess fins (fanlike structures) for steering, balancing and moving. The strongest force comes from the tail (caudal) fin. 3. Fish have scales for protection.
Fish are divided into three classes: Jawless - These fish have round mouths and tube like bodies. Included are the lamprey and hagfish.
Fish are divided into three classes: Cartilagenous: Those fish that do not have true bones, but skeletons made of cartilage. These include the sharks, skates, and rays.
Fish are divided into three classes: Bony Fish- Those that have skeletons made of true bone. More than 95 percent of all fish are bony fish.
AMPHIBIANS 1. Cold blooded animals that spend part of the their lives in water and part on land. 2. They have smooth moist skin with no scales. They can breathe through this skin. 3. Groups include frogs & toads and salamanders & newts. 4. Most lay uncovered eggs in water.
GREEN FROG
LEOPARD FROG
AMERICAN TOAD
MUD PUPPY
Reptiles 1. Cold blooded animals with thick dry scaly skin. 2. Lay covered eggs(usually on land) with leather-like coverings. 3. Can not breathe when completely submerged in water. 4. Groups include turtles, crocodiles and alligators, lizards, and snakes.
WARM BLOODED: Those animals who have body temperatures that remain constant and do not change with outside temperature.
Birds 1. Birds have bodies covered in feathers. 2. They lay eggs covered in a hard shell. Most are incubated by the parents. 3. The front legs of birds are modified as wings. 4. Most birds can fly.