Crazyt123, check with your local U.S. Department of Agiriculture or better yet, your local extension service. They’ll have a wealth of information on wildlife and indigenous plants that will do well in your climate.
Here is a link to your local extenstion service:
http://texasextension.tamu.edu/
Here is their list of plants:
Wildflowers: http://aggie-horticulture.tamu.edu./wildseed/tamuhort.html
Weeds: http://dallas.tamu.edu/weeds/
Plant Answers: http://aggie-horticulture.tamu.edu/plantanswers/web.html

Oh and yes your local U.S. Dept. of Agriculture might help some but your local extension service is your #1 resource for all of your needs with plants, insects, etc. They are almost always run from a college, in this case Texas A & M, that study the specific habitat in your area.
You can also check with your local U.S. Dept. of agriculture but I think you’ll find plenty with your extension service. Of course you can call the TX bureau of Land Management i.e. Parks too.
Here is the BLM (Bureau of Land management) for your area, it’s for New Mexico, Texas & Oklahoma combined so don’t be fooled if you follow the link:
http://www.blm.gov/nm/st/en/prog/restore_new_mexico.html
And just so y’all know, I only know this stuff because I work with engineers who have to figure consumption requirements of the watering of crops, ET (Evapotranspiration Rates) when working with surface and well water and I’ve been fortunate enough to do some research for them too. 