Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. The name amphipoda refers to the different forms of appendages, unlike isopods, where all the thoracic legs are alike. Of the 7,000 species, 5,500 are classified into one suborder, Gammaridea.
Cacomistle, Bassariscus sumichrasti, is a nocturnal, arboreal and omnivorous member of the carnivoran family Procyonidae. The term cacomistle is from the Nahuatl language (tlahcomiztli) and means "half cat" or "half mountain lion"; it is sometimes also used to refer to the ringtail, Bassariscus astutus, a similar species that inhabits arid northern Mexico and the American Southwest.