North American Frogs and Toads
A Guide to Distribution, Identification, and Taxonomy
This guide brings together information about frogs and toads that will
allow you use a clickable map to get a species list for any county in the
lower 48 United States, then provide you with identification and taxonomic
information for the species. You can even play the Patuxent Frog Quiz, in
which you have to guess a species from a picture, map , or call.
The site combines information from 3 sources: Geographic information comes
from range maps estimated at the USGS
Eastern Ecological Science Center, identification information comes from
the USGS Northern Prairie Wildlife
Research Center, and taxonomic information comes from the
Integrated Taxonomic
Information Service
Here are the options: