Threatened arthropods and described. The total number of living arthropod species is probably in the tens of millions. One conservative estimate puts the number of arthropod species in tropical forests alone at six to nine million species. As a consequence of all of the above, most published estimates of the total number of endangered insects and arachnids are probably low by at least an order of magnitude. Conservatively at least eighty percent of all living animal species are arthropods. Since arthropods constitute the majority of the faunal biomass on Earth, their role is vital to the survival of large numbers of insectivores
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