pork is usually fine. I know in some parts of the world you need to be careful about trichinosis, so find out if it's prevalent in your area. To be on the safe side freeze your pork for several weeks before feeding. My cat loves pork, it's a large portion of his diet.
Again, pork is perfectly safe. Trichinosis (the "parasite" referred to above) was eradicated from North American pork years ago. Unless you live in a 3rd world country, there is no reason to worry about pork. Even wild boar is perfectly safe if frozen 30 days (to kill parasites).