Research ethics is a core component of undergraduate psychology curricula, typically first encountered in introductory textbooks. Previous analyses of introductory textbooks focused on human research ethics. Given growing concerns about animal research—particularly among college students—we analyzed discussions of animal research ethics in 18 introductory psychology textbooks. Our results revealed that while most textbooks address this topic, defenses of animal use and mentions of oversight account for a majority of content, while discussions of ethics were lacking. We discuss implications of these results and suggest improvements for engaging students to think critically about animal research ethics.