Kalmar "Family Alligatoridae" tana nufin dangin dabbobi masu rarrafe waɗanda suka haɗa da nau'ikan alligators, caimans, da dabbobi masu alaƙa. An samo kalmar daga kalmar Latin "alligator," wanda ke nufin "lizard" da kuma kari "-idae," wanda ke nuna dangin haraji. Iyalin Alligatoridae na cikin tsari na Crocodylia, wanda kuma ya haɗa da kada da gharials. Ana samun membobin wannan iyali a cikin wuraren ruwa mai tsabta a ko'ina cikin Amurka, kuma an san su da ƙaƙƙarfan muƙamuƙi, jikinsu masu sulke, da halin farauta.