Because true civil liberties exist only when man can do what he wants.
The lawmakers should accept that humans are the pinnacle of the planet. We have rights because we have responsibilities, animals have neither. That is why all laws that are put in place for the benefit of animals should be scrapped. If the hunter wants to hunt he should, if the gypsy wants to engage in cock fighting he should and if the farmer wants to keep chickens in a battery cage he should. In Korea they skin cats and dogs alive and in China they farm bears to extract their bile. These people are truly free.