A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ məˈmeɪli.ə /). Mammals are characterised by the presence of milk -producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their …

2025年2月10日 · Mammal, a vertebrate animal whose young are nourished with milk from special mammary glands of the mother.

The list of species of Mammalia class Mammals (from Latin mamma, 'breast') are a group of vertebrates constituting the class Mammalia, characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from …

2023年11月22日 · Mammals are warm-blooded, hair-bearing vertebrates that produce milk. Mammals represent a diverse and fascinating class of animals, encompassing a wide range of species from tiny shrews to humans to the colossal blue whale. As members of the class Mammalia, they share certain defining characteristics that set them apart from other animal …

The animals belonging to class Mammalia are classified under vertebrata based on their structure and characteristics. They are warm-blooded animals and are found everywhere i.e, both on land and water.

The meaning of MAMMALIA is the highest class of the subphylum Vertebrata comprising humans and all other animals that nourish their young with milk secreted by mammary glands, that have the skin usually more or less covered with hair, a mandible articulating directly with the squamosal, a chain of small ear bones, a brain with four optic lobes, a muscular diaphragm …

Diversity The Class Mammalia includes about 5000 species placed in 26 orders. Systematists do not yet agree on the exact number or on how some orders and families are related to others. The Animal Diversity Web generally follows the arrangement used by Wilson and Reeder (2005). Exciting new information, however, coming from phylogenies based on molecular evidence …

2025年2月10日 · Mammal - Classification, Class Mammalia, Monotremes, Marsupials & Placental Mammals: This classification of living mammalian taxa includes the subclass Prototheria (monotremes) and the subclass Theria (live-bearing mammals), which is comprised of infraclasses Metatheria (marsupials) and Eutheria (placental mammals).

mammal, Any member of the class (Mammalia) of warm-blooded vertebrates having four limbs (except for some aquatic species) and distinguished from other chordate classes by the female’s milk-secreting glands and the presence of hair at some stage of development.

Characteristics Although all mammals are endothermic, this is not a defining feature of mammals, since this trait is shared with birds. However, the presence of hair is a unique mammalian characteristic. This filamentous outgrowth of the skin projects from the epidermis, though it grows from follicles deep in the dermis. In non-human species, hair is commonly referred to as fur. …