Amphibians and Reptiles in Comal County: Texas Cooperative Wildlife Collection list of species found in the county.
Butterflies of Comal County, Texas: Information about and pictures of all the known species of butterflies in the county.
Guadalupe River Clean-up: Guadallupe River Clean-up Page. Friends for Rivers is a volunteer organization dedicated to protecting the quality of the Guadalupe and Comal Rivers in the Comal County area.