I rescued a iguana for someone who didn't take care of him. I have him in a cage 5'x6'x2'. I can not touch him yet . He or she is very aggressive right now. He can't climb due to him having no front claws. He seems to be over well very healthy. I have had him for 3 days now. The first two days he did eat very little. Today he does not seem interested in food. He has a spot in the cage for basing that I keep it about 98 Degrees he has other spots in the cage to go when he needs to cool off. I do mist the cage and have a water dish too. Right now his bedding is newspaper. he is brown right now and I've noticed some shedding starting which I guess is good. So my main questions are will his nails grow back, how long should I go before worrying about him not eating and how do I go about getting him train due to previous people abusing him? I believe he or she is around 4 years old.