Is animal testing ethical?

My stance: yes, animal testing is ethical, the theory of ethics to support this is act utilitarianism.
Instructions: write a paper about animal testing in APA style with sources and citations. Must have introduction, both sides of the argument (pros and cons) with evidence. 3 body paragraphs. The last body paragraph must include my point of view and use that theory of ethics to support it. Must also include a conclusion. No more than 4 pages and use at least 4 sources APA format.