Threatened arthropods United States, and IUCN Red List for international purposes. Only a tiny fraction of the planet's endangered arthropods are formally recognized as such, as no one has ever evaluated the conservation status of the vast majority of arthropod species. It is difficult to estimate the total number of endangered arthropod species, since many of the taxa themselves have not been recorded. For example, in North America the estimated number of insect species exceeds 163,000, of which only about two thirds are taxonomically known. An even greater discovery awaiting, over 72 percent of North American arachnids are yet to be named
American Society for the Prevention of Cruelty to Animals have subsidiary departments. The Animal Health Services group is composed of three departments that focus on the health and well-being of animals. The Anti-Cruelty Group has eight departments that focus on different problems relating to animal cruelty. The Community Outreach Group works with multiple resources so that more animals that are classified as at risk-animals will be helped by the improvements that the group provides. The ASPCA Animal Hospital is a well-equipped medical facility that gives medical care to animals in need. Life-saving treatment to animals, whose owners cannot afford the treatment, are provided by The Trooper Fund which is