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			          Mammal - Wikipedia, the free encyclopedia
			           
			          Mammals are any members of a clade of endothermic amniotes distinguished from reptiles and birds by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.
			            https://en.wikipedia.org/wiki/Mammal
			         
			       
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			          ADW: Mammals - Mammalia
			           
			          All mammals have hair at some point during their development, and most mammals have hair their entire lives. Adults of some species lose most or all of their hair but, even in mammals like whales and dolphins, hair is present at least during some phase of ontogeny.
			            http://animaldiversity.org/accounts/Mammalia/
			         
			       
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			          Mammal - Animal - Britannica
			           
			          Mammal (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother.
			            http://www.britannica.com/animal/mammal
			         
			       
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			          ScienceDaily - Mammals News
			           
			          Find the latest news articles on mammals here.
			            https://www.sciencedaily.com/news/plants_animals/mammals
			         
			       
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			          Mammals - ARKive
			           
			          Most popular mammals. View videos and photos of 50 of the most popular mammals in nature. Learn more about their biology, threats and conservation.
			            http://www.arkive.org/mammals
			         
			       
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			          EDGE of Existence - Mammals
			           
			          Mammals exist in a great variety of forms.  However, they are all warm blooded vertebrates that possess fur or hair (at some stage in their development) and breathe air. Mammals nurse their young with milk, produced by the mother.
			            http://edgeofexistence.org/mammals/default.php
			         
			       
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			          Mammals - BrainPOP
			           
			          In this educational animated movie about Science learn about warm-blooded animals, fur, milk, puches, placentas, and hair.
			            https://www.brainpop.com/science/diversityoflife/mammals/
			         
			       
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			          Mammal Facts - Encyclopedia
			           
			          Get information, facts, and pictures about mammal at Encyclopedia.com. Make research projects and school reports about  mammal easy with credible articles from our FREE, online encyclopedia and dictionary.
			            http://www.encyclopedia.com/topic/mammal.aspx
			         
			       
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			          National Geographic - Mammals
			           
			          Great Pictures and info on mammals.
			            http://animals.nationalgeographic.com/animals/mammals
			         
			       
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			          5 Species You Won't Believe Are Related
			           
			          Imagine you're an animal attending your evolutionary family reunion (just pretend that's a thing for the sake of this article intro, OK?). You might be surprised to find out how remarkably similar it is to your last family reunion.
			            http://www.cracked.com/article_19264_5-species-you-wont-believe-are-related.html
			         
			       
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			          What's A Mammal? - Discovery Education
			           
			          Free Lesson plan teaching that mammals are classified by two shared characteristics and 11 groups.
			            http://www.discoveryeducation.com/teachers/free-lesson-plans/whats-a-mammal.cfm