We have one here in Arkansas as well. I did a little reading about it while looking for zoos to take my son to. They have a program (an expensive one) where you spend the whole weekend there helping with the elephants, and learning about them. From what i understand it doesn't matter what type of elephant, temperament, age, health ect they will take it in.
I was extremly surprised to find out its within half an hour of my house and i didnt even know it. I drove past it every day for 6 months on my way to work. Amazing what you learn when bored, plagued with insomnia and an urge to educate your child about wildlife... Lol