Western Fence Lizard Help
To begin with, I do apologize if this is the wrong place. Please, allow me to explain the situation. During January, I had encountered what I considered(at the time) a problem. I live in Nevada, so the winters are as cold as the summers are hot. A television man had come into our house to do work and he went into the crawl space under our house for something. Along the way he had encountered a western fence lizard which he had promptly tossed onto the cement curb along the crawl space.
I had thought that since the creature's hibernation was disturbed or perhaps he was possibly injured, that it was in it's best interest to be "rescued" or taken into temporary captivity. As of now, I'm still uncertain but I reckon he would've been fine, simply slow moving if I had left him. We acquired a ten gallon tank to put him in. The substrate is newspaper, there's a long, large rock for him to sit on as well as a place for him to hide in. Unfortunately, and I know this is a problem as well, we do not have a UV light(cannot afford one) for him. We only have a heat light. What I've been doing is putting him into a little box with screen on either side and setting in the sun of an open window during less windy days. He's also been eating gut-loaded crickets coated with a calcium and D3 powder.
He has been doing alright until I noticed last night (the heat light is turned off every night) that his mouth was slightly open. Today, he's been doing this often as well(though it's difficult to tell whether it's due to the heat light or not). I'm familiar that lizards do open their mouths to pant when the temperature is high enough but the rock last night was cool to the touch as well. Are there any possible sicknesses this could be related to and should I be concerned?
I would like to add that we cannot, unfortunately, take him to a vet due to money issues and that he is not socialized with humans(to retain the wild for releasing him when the temperature outside rises to at least 70 or 80 degrees). The only real humidity in his tank is a small top with water in it which evaporates after a day's worth of time.
Once again, I am sorry if this is not the right place to post this. I'm familiar that I may have made the wrong decision initially, but I'm trying to keep him alive now, just until I can release him.