Hi Gail,

Often the easiest way to identify a frog or toad is by its call, although
when several species are present it's sometimes hard to tell which one made
which call, since they stop when you catch them or get close! Here's a
link to Texas frog and toad calls:
http://www.lifesci.utexas.edu/resear...ogs/calls.html

A nice site for Florida, the sounds may help even if the ranges don't extend
to Texas:
http://www.wec.ufl.edu/extension/frogs/#

And a link to several commercial CDs/cassettes with other central/eastern US
species, many of which will still be found where you a
http://www.naturesound.com/guides/pages/frogs.html
http://www.angelfire.com/ks/heritagephoto/frog.html
http://www.amazon.com/exec/obidos/tg...24865?v=glance

You may have to wait until it warms up a bit to hear their calls, although
late February/early March where you are may start the breeding season for
many species.

Happy Ponding,
Tim