AZLE -- When Rayfield Wright decided to have his pet mercifully put to sleep, he did what he would do for any other beloved family member.He purchased a casket, burial plot and headstone.One recent spring day, the former Dallas Cowboys offensive lineman drove from his Parker County home to the Smoke Rise Farm Pet Cemetery in Azle. This large man nicknamed "Big Cat" for his quickness and prowess, this perennial All-Pro who played in five Super Bowls, knelt at an open grave to say goodbye to a small gray-striped feline.Wright found the animal on a rooftop 17 years ago.He took...