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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
In modern mammals, this is used for cleaning the fur, indicating that they, contrary to their cynodont ancestors, had a furry covering. An insulative covering is necessary to keep a homeothermic animal warm if it is very small, less than 5 cm (1.97 in) long; [ 10 ] the 3.2 cm (1.35 in) Hadrocodium must have had fur, therefore, but the 10 cm (3. ...
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A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. 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.
Metatheria (from Greek μετά-, metá-'changed' and θηρίον, thēríon 'beast'; lit. ' changed beasts ') is a mammalian clade that includes all mammals more closely related to marsupials than to placentals.
The archive of number of mammals on earth is constantly growing, but is currently set at 6,495 different mammal species including recently extinct. [2] There are 5,416 living mammals identified on earth and roughly 1,251 have been newly discovered since 2006. [ 2 ]
Felidae is a family of mammals in the order Carnivora, colloquially referred to as cats. A member of this family is called a felid. A member of this family is called a felid. [ 1 ] [ 2 ] The term "cat" refers both to felids in general and specifically to domestic cats .
The following outline is provided as an overview of and topical guide to zoology: . Zoology – study of animals.Zoology, or "animal biology", is the branch of biology that relates to the animal kingdom, including the identification, structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.