In this title, the word “animal” includes every dumb creature; the words “torment,” “torture,” and “cruelty” include every act, omission, or neglect whereby unnecessary or unjustifiable physical pain or suffering is caused or permitted; and the words “owner” and “person” include corporations as well as individuals; and the knowledge and acts of any agent of, or person employed by, a corporation in regard to animals transported, owned, or employed by, or in the custody of, the corporation, must be held to be the act and knowledge of the corporation as well as the

agent or employee.