will make a grunting noise that mimics the hiss of a cobra. This example of Müllerian mimicry is likely unique to vertebrates due to its multiple modalities: biochemical, behavioral, visual, and auditory. Since the cobra is undoubtedly more dangerous to predators (and prey, as the loris eats predominantly fruits, gums, and insects), it is unclear if the benefit from this system is mutual; Still, both species are dangerous in their own right, and can therefore most accurately be classified as Müllerian. Aggressive Aggressive mimicry is a form of mimicry, opposite in principle to defensive mimicry, that occurs in certain predators, parasites or parasitoids. These organisms benefit by sharing some of the characteristics of a harmless species in order to deceive their prey or host. Most examples of aggressive mimicry involve the predator employing a signal to lure its prey towards it under the promise of food, sex, or other rewards—much like the idiom of a wolf in sheep's clothing. In predators Some predators pretend to be prey or a third-party organism that the prey beneficially interacts with. In either situation, the mimicry increases the predator's chances of catching its prey. One form of predatory mimicry, lingual luring, involves wriggling the tongue to attract prey, duping them into believing the tongue is a small worm, an unusual case of a vertebrate mimicking an invertebrate. In the puff adder Bitis arietans, lingual luring only occurs in the act of attracting amphibian prey, suggesting that puff adders distinguished between prey types when selecting how to perform a display of aggressive mimicry. Another form of aggressive mimicry is caudal luring, in which the tail is waved to mimic prey. By mimicking invertebrate larva, the predator attracts prey of small vertebrates such as frogs, lizards, and birds. Male puff adders have longer, more obvious-looking tails. Sidewinder rattlesnakes, puff adders, lanceheads, and multiple other ambush-predatory snakes use caudal luring to attract prey. Complicated forms of aggressive mimicry have also been observed in fish, creating a system that resembles Batesian mimicry. The false cleanerfish, Aspidontus taeniatus, is a fin-eating blenny that has evolved to resemble a local species of cleaner wrasse, Labroides dimidiatus, which engages in mutualistic cleaning with larger fish. By closely mimicking the coloration and the cleaner fish's distinctive dancing display, false cleanerfish are able to remain in close quarters with large predatory reef fish, and gain access to victims during foraging. Some aggressive mimics