FDA has developed this guidance document to assist industry in designing evaluation strategies for, and reporting the results of, animal studies for medical devices. The animal studies utilized for the assessment of these devices typically provide initial evidence of device safety, their potential performance when used in a living system, and the biologic response that a living system may mount towards the device. This guidance provides recommendations for members of industry who perform, and FDA staff who review evaluations of, animal studies for medical devices. In this document, the terms "you" and "your" refer to members of industry, also known 119 as "sponsors" or "applicants." The terms "we," "us," "our," and "Agency" refer to FDA.