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
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