Animal Use and Care in Biomedical Research Practice Test 2026 – Complete Study Guide

Rodents dominate the pool of animals used in biomedical research because they are small, inexpensive to care for, reproduce quickly, and there are extensive, well-controlled genetic tools and standardized strains available for them. This combination makes them the most practical and versatile models for studying disease processes and testing interventions. As a result, the vast majority of animals used in medical research are rodents—well over 90 percent. Other species are used, but they make up a comparatively small portion of total animals.