Experimental animals are commonly used in medical and scientific research. However, to avoid the negative connotation that this term brings to mind, it's important to use alternative words that are more appropriate. Some of the synonyms for experimental animal include laboratory animal, research animal, animal model, test subject, and research participant. These alternatives convey a more humane and respectful approach to the animals involved in these studies. Moreover, they reflect a strong commitment to animal welfare while advancing important scientific or medical breakthroughs that wouldn't be possible otherwise. In short, choosing the proper language when referring to these animals demonstrates our consideration for the ethical implications of such research.