As it is enunciated by a proportion, it is essential to make scientific discoveries by using fauna while, others contradictory viewpoint, it is illegal and it has a plethora of drawbacks on animals. Albeit there is a dichotomy of view on this concern ,these two apprehensions have various merits and demerits .In my view of point, some scientific investigations ought to be done by using fauna. I will provide interesting justifications and exemplify essential elements to justify my perspective.