The only restriction that Texas Parks and Wildlife lists for hog hunting is that the hunter possess and carry a valid TX hunting lisence. They may be collected by firearm, bow, crossbow, or trapping. They may be hunted at day or night. There is no bag limit. As it stands right now, it's up in the air whether dogs may be used for anything but tracking a wounded pig, but that may change soon.
" No closed season, daily bag or possession limit. These animals may be hunted at any time by any means or method on private property. Public hunting lands may have restrictions. A hunting license is required." --
Texas Parks and Wildlife Hunting Rules and Regulations
I'm moving this to The Hunt.