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en.wikipedia.org/wiki/Mammal

Mammals are any vertebrates within the class Mammalia a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a ...

www.bbc.co.uk/nature/life/Mammal

Mammals are a class of vertebrates characterised by warm-blood, hairy bodies, a four-chambered heart, a single jaw bone, sweat glands and - in females ...

kids.nationalgeographic.com/animals/hubs/mammals

Mammals include humans and all other animals that are warm-blooded vertebrates (vertebrates have backbones) with hair. They feed their young with milk and ...

www.nationalgeographic.com/animals/mammals

Your destination for news, pictures, facts, and videos about mammals.

adminkids.sandiegozoo.org/animals/mammals

What Makes a Mammal? There are more than 4,000 different species of mammals. The smallest is the hog-nosed bat, which weighs 0.05 ounces. The largest is ...

www.kidzone.ws/animals/mammals.htm

Fun facts about mammals including photos and printable activity worksheets; suitable for Kindergarten through Grade 6 children.

www.stlzoo.org/animals/abouttheanimals/mammals/listallmammals

Mammals at our Zoo. The Saint Louis Zoo has more than a hundred mammal species, representing most of the groups on the planet. Many of our species are ...

www.arkive.org/mammals

Mammals are warm-blooded vertebrates which, with the exception of a few notable species, nurse their young on milk produced by the female's mammary ...

www.britannica.com/animal/mammal

mammal: Mammalia any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother.