Does anyone know how to make a prickly pear cactus grow outside?

we put one in the yard but it seem's to be dying on us and we need help saving it please help.
Does anyone know how to make a prickly pear cactus grow outside?
where do you live?
Reply:If you are cultivating some from an existing plant, give it a day or two to "scar". Then, simply select your spot and plant it. Remember, cactus have shallow root systems so it's not necessary to go too deep.
Reply:yeah... the climates gotta be right and keep it from being eaten by those dang javelina

bloom-