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2. Animals are separated into groups or categories so that they are more easily studied and discussed by scientists and others. Animal Classification www.assignmentpoint.com

3. Mammals Fish Birds Reptiles Amphibians www.assignmentpoint.com

4. Mammals Characteristics: Have teeth Have hair Are warm blooded Have a single jaw bone Have inner ear bones Produce milk for their young www.assignmentpoint.com

5. Mammals Mammals have larger brains and seem to be the most capable lear ners. All mammalian mothers nourish their babies with milk. www.assignmentpoint.com

6. Fish Characteristics: Are cold-blooded vertebrate (backbone) Live in water Usually have paired fins, gills, and scales www.assignmentpoint.com

7. 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. www.assignmentpoint.com

8. Amphibians Characteristics: Are cold-blooded vertebrate (backbone) Lay their eggs in water Lack any skin coverings such as fur, scales or feathers www.assignmentpoint.com

9. Amphibians Young amphibians tend to resemble s mall fish. Amphibian means "two lives," a refere nce to the change that frogs go throu gh as they move from egg to tadpole t o frog. Even as adults, most frogs and other amphibians must stay close to water.

10. Birds Characteristics: Have feathers Lay eggs Have bodies specially adapted for flight Have a beak rather than teeth www.assignmentpoint.com

11. Birds Birds Their nearly hollow bones provide lightweight strength. Birds now live almost everywhere on Earth. www.assignmentpoint.com

12. Characteristics: Have scales Lay leathery eggs on land Are often called cold-blooded because they can't regulate their own body temperature Reptiles www.assignmentpoint.com

13. 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. Reptiles www.assignmentpoint.com

14. Resources Quia Classification Quiz Charts: Animal classification, Fish, Bird, Amphibian, Animals,Animal classificationFishBird AmphibianAnimals The Animal Kingdom www.assignmentpoint.com

15. 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&i d=1130 www.assignmentpoint.com