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Vertebrates
Vertebrates are animals with
backbones and spinal columns .
Vertebrates make up about 4% of all described
animal species.
6200
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Vertebral Column in Human
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Vertebral Column in Goat
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Fish
A fish is any member of a group of organisms
that consist of all gill bearing aquatic animals
that lack limbs with digits.
Most fish are cold-blooded .
Fish are an important resource worldwide,
especially as food .
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Amphibians
Amphibians, members of the class Amphibia ,
whose living forms include frogs, salamanders.
Amphibians lay their eggs in water .
Amphibians breathe in different ways through
their :
Gills
Lungs
Skin
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extra
Most amphibians breathe underwater through
gills when they are young.
Most amphibians lose their gills when they
are mature but there are some, such as the
salamander (mudpuppies) that keep their gills
even when mature.
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Reptiles
Reptiles are members of the class Reptilia .
They are cold-blooded as well as
bearing scales.
They lay eggs .
There are more then 9500 species of reptiles
exist in world .
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Birds
Birds are :
Feathered
Winged
Bipedal
Warm blooded
Egg-laying
Vertebrate animals
10,000 living species
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Mammals
Mammals are characterized by :
air breathing vertebrate animals
possess endothermy
hair
three middle ear bones
mammary glands young.
Most mammals also possess sweat glands andspecialized teeth.
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Animal
Animals are a major group of multicellularorganism.
They belongs to kingdom Animalia.
Most animals are motile .
All animals are also heterotrophs.
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Number of Animal Species alive today
So far scientists have named and classified more than1 million animals.
Scientists believe there may be from 2 million to asmany as 50 million kinds of animals alive today."
"Animal." World Book Encyclopedia. 16 vols. Chicago:
World Book, 2003.
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Marsupials
Marsupials are mammals living primarily in
the Southern Hemisphere .
A distinctive characteristic, common to most
species, is that the young are carried in a
pouch .
Kangaroos
Koalas
Wombats
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Primate
A Primate is a mammal .
They are found in the trees of tropical forests.
Mouse lemur Gorilla
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Cetacean
Cetacean includes the marine mammalscommonly known as whales, dolphins .
The body of a cetacean is spindle-shaped .
The forelimbs are modified into flippers.
Cetaceans are nearly hairless
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Rodent
Rodent are characterized by a single pair ofcontinuously growing incisors in each of the
upper .
Common rodents include mice , rats , squirrels
, guinea pigs , and hamsters .
Most rodents eat seeds or plants .
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marine mammals
barrel-shaped
They lack external ears, hey swim with efficient, undulating whole-
body movements using their more-developed
rear flippers.
True seals generally communicate by slapping
the water and grunting rather than vocalising.
http://en.wikipedia.org/wiki/Marine_mammalshttp://en.wikipedia.org/wiki/Marine_mammals