Wildlife preservation is the practice of protecting threatened plant and animal speciesand their habitats. Among the goals of wildlife conservation are to ensure that nature will be around for future generations to delight in and to acknowledge the importance of wildlife andwilderness lands to human beings.  Many countries are government agencies devoted to wildlife preservation, which help to carry out policies developed to protect wildlife Numerous independent not-for-profit companies also promote numerous wildlife preservation causes.  Wildlife preservation has actually become an increasingly important practice due to the negative impacts of human activity on wildlife.
The science of extinction. A threatened species is specified as a population of a living being that is at the risk of ending up being extinct due to the fact that of numerous reasons. Either they are couple of in number or are threatened by the differing ecological or predation criteria.
Major threats to wildlife can be classified as below: 
Environment loss: Fewer natural wildlife environment locations stay each year.
Furthermore, the habitat that stays has actually frequently been degraded to bear little resemblance to the wild locations which existed in the past. * Environment modification: Due to the fact that numerous types of plants and animals have particular habitat requirements, environment change could cause disastrous loss of wildlife types. A slight bugs are damaged and interrupted. Plants and wildlife are sensitive to moisture modification so, they will be harmed by any change in moisture level. * Pesticides and hazardous chemical: Extensively utilized, making the environment toxic to specific plants, insects, and rodents.
* Unregulated Searching and poaching: Unregulated hunting and poaching causes a significant danger to wildlife. Together with this, mismanagement of forest department and forest guards activates this issue. * Natural phenomena: Floods, earthquakes, volcanoes, lightning, forest fires. * Pollution: Pollutants launched into the environment are consumed by a variety of organisms. * Over-exploitation of resources: Exploitation of wild populations for food has resulted in population crashes (over-fishing, for example)
The North American Model of Wildlife Conservation is considered to be one the most successful conservation models in world. It has its origins in 19th century conservation movements, the near extinction of several species of wildlife (including the American Bison) and the rise of sportsmen with the middle class. Beginning in the 1860s sportsmen began to organize and advocate for the preservation of wilderness areas and wildlife. The North American Model of Wildlife Conservation rests on two basic principles – fish and wildlife are for the non-commercial use of citizens, and should be managed such that they are available at optimum population levels forever. These core principles are elaborated upon in the seven major tenets of the model.
In the North American Model, wildlife is held in the public trust. This means that fish and wildlife are held by the public through state and federal governments. In other words, though an individual may own the land up which wildlife resides, that individual does not own said wildlife. Instead, the wildlife is owned by all citizens. With origins in Roman times and English Common law, the public trust doctrine has at its heart the 1842 Supreme Court ruling Martin V. Waddell.
Under the North American Model, the killing of game must be done only for food, fur, self-defense, and the protection of property (including livestock). In other words, it is broadly regarded as unlawful and unethical to kill fish or wildlife (even with a license) without making all reasonable effort to retrieve and make reasonable use of the resource. Wildlife as an international resource
As wildlife do exist only within fixed political boundaries, effective management of these resources must be done internationally, through treaties and the cooperation of management agencies.
The Wildlife Conservation Act was enacted by the Government of India in 1972. Soon after the trend of policy makers enacting regulations on conservation a strategy was developed to allow actors, both government and non-government, to follow a detailed “framework” to successful conservation. The World Conservation Strategy was developed in 1980 by the “International Union for Conservation of Nature and Natural Resources “(IUCN) with advice, cooperation and financial assistance of the United Nations Environment Programme (UNEP) and the World Wildlife Fund and in collaboration with the Food and Agriculture Organization of the United Nations (FAO) and the United Nations Educational, Scientific and Cultural Organization (Unesco)”
The strategy aims to “provide an intellectual framework and practical guidance for conservation actions.” This thorough guidebook covers everything from the intended “users” of the strategy to its very priorities and even a map section containing areas that have large seafood consumption therefore endangering the area to over fishing. The main sections are as follows:
The objectives of conservation and requirements for their achievement:
1. Maintenance of essential ecological processes and life-support systems.
2. Preservation of genetic diversity.
3. Sustainable utilization of species and ecosystems.
Priorities for national action:
1. A framework for national and subnational conservation strategies.
2. Policy making and the integration of conservation and development.
3. Environmental planning and rational use allocation.
Priorities for international action:
1. International action: law and assistance.
2. Tropical forests and drylands.
3. A global programme for the protection of genetic resource areas.
1. Tropical forests
2. Deserts and areas subject to desertification.