Lobsters are invertebrates, members of the Class Crustacea of the Phylum Arthropoda. This class includes animals without backbones and with hard shells like crab, shrimp, crayfish, water fleas and wood lice. A male lobster is called a cock and a female a hen or chicken (when she weighs about 1 pound).
The Big Book serves as the basis of Alcoholics Anonymous (AA). It contains the 12 steps that are at the core of the Alcoholics Anonymous program, as well as stories about alcoholics who have been through the recovery process.
The full text of each of these two books is available on the AA website at no charge. 1  Alcoholics Anonymous: the story of how many thousands of men and women have recovered from alcoholism (multiple PDFs) (4th ed.). 2  Twelve Steps and Twelve Traditions (multiple PDFs).  3 Home Page.