- 4 chambered heart
- Well developed brain
- Posses hair made of keratin. The evolution of mammalian keratin is believed to be independent of reptilian keratin. Hair provides insulation .
North Atlantic Right Whale
- Eubalaena glacialis
Chimpanzee
- Pan troglocytes
Credit Given to:
http://www.preservearticles.com/2011082011055/characteristics-of-class-mammalia.html
http://animaldiversity.ummz.umich.edu/accounts/Eubalaena_glacialis/pictures/collections/contributors/Grzimek_mammals/Balaenidae/Eubalaena_glacialis/
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