One estimate suggests that a quarter of the Earth's species are at risk of extinction within the next thirty years. This is primarily because of loss of natural habitat, though overhunting and pollution also play an important role. All organisms such as animals constitute, to various degrees, an invaluable part of ecosystem vitality. In addition, and apart from ethical grounds, the biodiversity contained in animals vulnerable to extinction comprises a genetic pool for traits that can be exploited to respond to unforeseen future needs. One approach that may conserve wild animal genetic diversity by, for instance, helping to avoid inbreeding, is to compile a database of wild animal genetic resources.
This strategy features in the framework of Agenda 21 as formulated at UNCED (Rio de Janeiro, 1992), now coordinated by the United Nations Commission on Sustainable Development and implemented through national and local authorities.