predator appears in the site of chorusing, the individual has a higher chance of getting attacked when there are not as many frogs in the site. The cost-benefit model of the frog chorusing behavior suggests the influence of the asymmetric benefits related to male size and behavior on the size of male túngara frogs in terms of joining the choruses. Reproduction As male túngara frogs gather in choruses in the breeding site and call their mates, females move smoothly through the crowd of males and choose their mate through physical contact. The male clasping the female from the top, they remain in the state of amplexus for up to several hours. When mating, the male frog centers himself atop the female to do a rhythmic mixing of a foam-producing solvent released by the female to generate a floating foam nest. The nests are resistant bio-foams that protect the fertilized eggs. After about four days, the tadpoles leave and the nest degrades but otherwise can last for up to two weeks. Females túngara frogs also exhibit elicitation behaviors that mainly serve to cause a potential mate to increase its sexual display intensity. Among all repeatable and noticeable locomotive behaviors that females exhibit, behaviors in which females clearly move closer to or farther from males are known as approach/retreat (AR) behaviors, while behaviors in which females don’t move closer or farther are known as nonapproach/retreat (NAR) behaviors. Specifically, behaviors, elicitation behaviors are NAR behaviors that induce increase of number of chucks from males. Their primary role is manipulating male display, not acquiring mate. Elicitation behaviors vary with male chorus size, being more common in low density choruses than high density choruses due to its main purpose of producing more chucks. In high density choruses, increased production of chucks would not provide as much benefit than in low density choruses. Relationships with other organisms It has been reported that the frog may have a mutualistic relationship with tarantulas of the genus Aphonopelma in Mexico. As observed in microhylid frog Chiasmocleis ventrimaculata and tarantula Xenesthis immanis, the spider may protect the frog from predators while the frog protects the spider's eggs from ants, an interaction that may occur with other microhylids as well as the Túngara frog, which is a leptodactyloid. Protective coloration and behavior Some of the main predators of túngara frogs include bat (Trachops cirrhosus), frog (Leptodactylus pentadactylus), opossum (Philander opossum), and