Is a dwarf crocodile a mammal?

A crocodile is not a mammal, rather, it is a reptile. The defining characteristic of mammals is the possession of mammary glands (hence the name). These are the glands which make milk to feed the young (one of the definitions of mammal),and only mammals have them. Crocodiles do not feed their young on milk, do not have mammary glands and cannot therefore be mammals.