CONEXION:  Rene Rios works with Guide Dogs of Texas to train puppies from the time they are born until they are eight weeks old, to become guide dogs for the visually impaired. He is currently taking care of a litter of puppies from his home. After eight weeks they'll go with volunteer trainers.  Helen L. Montoya/Conexion Photo: HELEN L. MONTOYA, San Antonio Express-News / ©SAN ANTONIO EXPRESS-NEWS
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