what are the distinguishing features of the class of animals you just mentioned?
They are a group of vertebrate animals constituting the class Mammalia (), and 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.
Mammal
Mammals (from Latin "mamma" "breast") are a group of vertebrate animals constituting the class Mammalia (), and 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. 
where is the cliturous located on a woman It is at the front junction of the labia minora (inner lips), above the opening of the urethra what is the function of this organ? It acts as a primary anatomical source of human female sexual pleasure. and what is the biological process through which this is achieved? Through sexual reproduction is it present in the female species of all animals? It is present in mammals, ostriches and a limited number of other animals. who identified it for the first time? UNANSWERABLE
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Mammal [SEP] Introduction
Mammals (from Latin "mamma" "breast") are a group of vertebrate animals constituting the class Mammalia (), and 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 reptiles and birds, from which they diverged in the late Carboniferous, approximately 300 million years ago. Around 6,400 extant species of mammals have been described. The largest orders are the rodents, bats and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (apes including humans, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others).