The seven levels of classification depend on the specific breed of the frog, but a frog's classifications can be determined down to the family level. The seven classifications of life include kingdom, phylum, class, order, family, genus and species, in that order. For a frog, the kingdom is "animal" because the frog is an animal that moves around and finds its own food, as opposed to a plant.
The phylum is "chordate" because the frogs are vertebrates, as opposed to invertebrates. According to Fairfax County Public Schools Ecology, the frog falls into the "amphibians" class because it can live in both water and on land. The frog fits into the "Salientia" order because most species must return to water in order to breed. For example, most frogs lay eggs that hatch into tadpoles, but they must do so in water.
Finally, the family, genus and species will all depend on what particular type of frog an individual is examining. A bullfrog, according to FCPS Ecology, is in the "Ranidae" family, the "Rana" genus and then the "Rana catesbeiana" species. Frogs that share certain characteristics will be grouped together in these last three categories but will also be differentiated by those characteristics.