Reference of this word is to animals. It is so because animals are dirty. And they are not hygienic. Sometimes human beings are referred to as animals because of their manners. There are moments when this word is substituted to another word called filthy. But as long as the word is understood then the message is not known. But there is a value for everything. At the same time there are pleasant animals of which human beings love. At the same time there are animals, which are more intelligent than human beings.

DR.HASHIM S.H. BEHBEHANI