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
Frog legs and has been introduced. In these ecosystems, American bullfrogs can decimate local amphibian populations, upset ecosystem balance and have negative impacts on other species of wildlife as well. According to Jewish dietary laws all reptiles and amphibians are considered unclean animals. Therefore, frog legs are not kosher, and are forbidden to observant Jews. Frog meat is considered as "haraam" (non-"halal") according to mainstream Islamic dietary laws. Frog meat is not halal for two reasons: the meat to be consumed should not be considered disgusting, and frogs, together with ants, bees, and seabirds, are animals that should not be killed by