Venom types. Among the major classes of toxin in venoms are: Venom is widely distributed taxonomically, being found in both invertebrates and vertebrates; in aquatic and terrestrial animals; and among both predators and prey. The major groups of venomous animals are described below. Venomous arthropods include spiders, which use fangs — part of their chelicerae — to inject venom; and centipedes, which use forcipules — modified legs — to deliver venom; along with scorpions and stinging insects, which inject venom with a sting. In insects such as bees and wasps, the stinger is a modified egg-laying device — the ovipositor. In
Toxicology of red imported fire ant venom (LD) on tested female rats is 0.36 mg/kg. Approximately 46 proteins have been identified in the red imported fire ant's venom, although scientists have long believed the venom only contained alkaloids. This assumption was mostly due to the difficulties in obtaining sufficient venom for analysis because of its the low protein content, which is only 0.1% of the venom's total weight. These proteins are experimentally suggested to directly account for the anaphylactic reactions seen in humans sensitive to the venom. Whilst including a number of neurotoxins and potential allergens, not all of these proteins are involved with venom function. At