<P> Several peer - reviewed comparative studies have concluded that the educational outcomes of students who are taught basic and advanced biomedical concepts and skills using non-animal methods are equivalent or superior to those of their peers who use animal - based laboratories such as animal dissection . </P> <P> A systematic review concluded that students taught using non-animal methods demonstrated "superior understanding of complex biological processes, increased learning efficiency, and increased examination results ." It also reported that students' confidence and satisfaction increased as did their preparedness for laboratories and their information - retrieval and communication abilities . </P> <P> Three studies at universities across the United States found that students who modeled body systems out of clay were significantly better at identifying the constituent parts of human anatomy than their classmates who performed animal dissection . </P> <P> Another study found that students preferred using clay modeling over animal dissection and performed just as well as their cohorts who dissected animals . </P>

How do you know if a fetal pig is male or female