Ike is eating more and is now drinking on his own!!!!! I'm so happy! Thank you for your help. One question, I have my ferrets down in the basement(that's where we spend most of our time) It's getting pretty cold at night and I'm not sure how to make sure they are all warm. I have lots of beds and sleep sacks in their cage. Their cage is four stories high. But poor Ike shivers alot. Is it ok to put a electric heater by their cage on low?