Contact the animal shelters , local veterinary clinics, animal control and any relevant animal clubs and be prepared to give them a description of the animal you found, as well as when and where you found it. Put signs up in the neighborhood where you found the animal. Put an ad in the daily newspaper. Give it some time. If you can't temporarily keep the animal In the Houston area there are many non-profit organizations , city and county agencies , and breed rescue clubs that can help you.
Different organizations treat found animals differently.
They should be willing to discuss their policy with you. Some will come and pick up the animal, but you will probably have to take it in yourself.