There is a widespread belief among the animal-lovers that without doubt every wild animal living on the Earth has a special place in the nature despite the lack of researches of the role of the wild animals in the biodiversity. In this case, although most of the people share the opinion about the restrictive regulations on some wild animal breeds which can sometimes spread danger to the public, such as street dogs, I believe that in order to preserve biodiversity in the nature including wild animals we should carefully use all our resources on the strong grounds of scientific researches. In this essay, I will firstly discuss the importance of protection of wild animals using all the possible resources before explaining its drawbacks.