Laboratory animals are those used for scientific research, testing, or experimentation purposes. However, there are several synonyms for this term, including animal models, experimental animals, research animals, test subjects, and lab specimens. Each of these synonyms refers to the use of animals in a controlled environment to facilitate medical discoveries, drug development, or problem-solving in various fields of science. While animal testing is a sensitive topic, it is essential to recognize the important contribution of laboratory animals to scientific advancement and the benefits that result from these studies. Thus, understanding and using different synonyms for laboratory animals can help to avoid negative connotations.