Keeping animals in cages is cruel, and zoos are just for human entertainment. i have references that need to be included. i have also included my proposal. Format according to MLA guidelines (Links to an external site.) four pages minimum thesis statement in the introduction must be underlined topic sentences must be underlined use lead-in phrases (also known as signal phrases) before your quotes include at least two quotes per page a complete works cited page is required. Must have subtopics all through with a strong introduction and conclusion.