+**Mammal** is a class of [vertebrate](/wiki/vertebrate) animals. These [warm-blooded](/wiki/warm_blood) creatures are defined by the presence of hair and the unique ability to nourish their young with milk from [mammary glands](/wiki/mammary_gland).
+## See also
+- [Animal](/wiki/animal)
+- [Hair](/wiki/hair)
+- [Reptile](/wiki/reptile)
... 1 more lines