AFAIK cock fighting is unfortunately outlawed in Texas. I believe that transportation to Louisiana and New Mexico to fight game cock is also unfortunately outlawed in Texas.
AFAIK knives that aren't dirks, daggers, bowie knives, and have blades 5.5" or less are legal in Texas.
I think the Texas 'shoot the thief at night law' is good. I also think that killing 6 chickens is ****** up.
There is a local NM case of game cock thief being shot in the legs with a 10/22 in daylight. He was charged with simple battery.