A list of the attributes that define a mammal is a ragbag of things fur live birth three bones in the middle ear a brain whose two halves are robustly joined together but this curious collection of features contains the roots of all the biology that makes humans what we are monkeys with . I mammal is a history of mammals and their ancestors and of how science came to grasp mammalian evolution and in celebrating our mammalian ness liam drew binds us a little more tightly to the five and a half thousand other species of mammal on this planet and reveals the deep roots of many traits humans hold dear. Full story reconstruction of edaphosaurus a primitive mammal ancestor its long spines form a sail on its back dating back to the earliest land animals mammals made the most of the . Back to animals what makes an animal a mammal mammals are a particular class of animal what makes an animal a mammal are several things first they must have glands that give milk. What makes an animal a mammal are human beings mammals do all mammals give birth to live young but what exactly does it mean to be a mammal mammals are the animals that make up the scientific class mammalia throughout the entire earth there are over 5000 different species of mammals write a story about your favorite mammal
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