I'm on the fence with this one. I don't believe that just any idiot should be able to buy any exotic animal. If you want to own a tiger -or something else dangerous like a giant snake, you should have to take a class/test on basic care/safety, have a permit, and someone should come to make sure you have a proper facility/enclosure for the animal. I know these regulations are already in affect for most animals that are considered dangerous, but it seems like there needs to be a little more involvement so idiots don't keep their tigers in apartment buildings. Those are the people that give exotic pet owners a bad name.
We had a family friend that had two pet cougars, they were "house cats". Once the cougars got out of hand the guy opened up the front door and let them out of the house. I think that if people like that had a permit and they knew the state knew about them having a pet like that they would be much more likely to make the correct decision when they no longer wanted the animal.