Some causes of wildlife extinction include habitat destruction, pollution, hunting and introduction of foreign species to an environment. Many causes of extinction are directly related to humans.
The growth of the human population has led to the destruction of many animal habitats. As forests are cut down to make room for new homes and developments, animals are left with nowhere to live. If they cannot find another suitable area to live, many species face extinction.
Overfishing and unregulated hunting caused many animal species, such as the wild buffalo, to disappear. Several states and countries have now placed limits on the hunting of endangered or high risk species to prevent this problem.