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Animal classification is essential for studying and discussing the diversity of life on Earth. This guide categorizes animals into five major groups: Mammals, Fish, Birds, Reptiles, and Amphibians. Mammals are warm-blooded, possess hair, and nourish their young with milk. Fish are cold-blooded and primarily live in water. Birds have feathers and are adapted for flight, while reptiles have scales and lay eggs on land. Amphibians live both in water and on land and undergo a transformation during their life cycle. Explore their unique characteristics to better understand our animal kingdom.
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Classification? • Animals are separated into groups or categories so that they are more easily studied and discussed by scientists and others.
Animal Classification • Mammals • Fish • Birds • Reptiles • Amphibians
Mammals Characteristics: • Have teeth • Have hair • Are warm blooded • Have a single jaw bone • Have inner ear bones • Produce milk for their young
Mammals • Mammals have larger brains and seem to be the most capable learners. • All mammalian mothers nourish their babies with milk.
Fish Characteristics: • Are cold-blooded vertebrates (backbone) • Live in water • Usually have paired fins, gills, and scales
Fish • Most fish lay large numbers of eggs, but some have live birth. • Most fish breathe by drawing water over four or five pairs of gills.
Amphibians Characteristics: • Are cold-blooded vertebrates (backbone) • Lay their eggs in water • Lack any skin coverings such as fur, scales or feathers
Amphibians • Young amphibians tend to resemble small fish. • Amphibian means "two lives," a reference to the change that frogs go through as they move from egg to tadpole to frog. • Even as adults, most frogs and other amphibians must stay close to water.
Birds Characteristics: • Have feathers • Lay eggs • Have bodies specially adapted for flight • Have a beak rather than teeth
Birds • Their nearly hollow bones provide lightweight strength. • Birds now live almost everywhere on Earth.
Reptiles Characteristics: • Have scales • Lay leathery eggs on land • Are often called cold-blooded because they can't regulate their own body temperature
Reptiles • Reptiles do not use energy to fuel internal "furnaces" • Although reptiles breathe through lungs, some reptiles can also absorb oxygen in water through their mouth.
Resources • Quia Classification Quiz • Charts: Animal classification, Fish, Bird, Amphibian, Animals, • The Animal Kingdom
Resources http://www.nmnh.si.edu/BIRDNET/ http://falcon.jmu.edu/~ramseyil/vertebrates.htm http://www.edhelper.com/AnimalReadingComprehension_1_1.html http://www.edhelper.com/animals.htm http://animaldiversity.ummz.umich.edu/site/index.html http://anthro.palomar.edu/animal/links.htm http://www.dowslane.org/reptile.html http://www.seaworld.org/animal-info/animal-bytes/index.htm http://www.hhmi.org/coolscience/critters/critters.html http://www.quia.com/servlets/quia.activities.common.ActivityPlayer?AP_rand=785616651&AP_activityType=14&AP_urlId=1130&AP_continuePlay=true&id=1130
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