When rehabbing weak animals, warmth and
hydration are very important. Until he is stronger, I would keep his viv no less than mid to upper eighty degrees, even at night,with his bask spot 105-110.If he is cool to the touch, warm him slowly! I have found that holding a cold baby right against the skin of my tummy is a gentle way to warm them up and not get them too warm, too fast!
If he has been malnourished, start him off with easy to digest food, and not too much at one meal. Waxworms are a soft, digestable food with lots of fat and most Beardies love them. I use them for Dezi as treats only, because they have such a high fat percentage, but I always keep them on hand, to use as tempting bits for rehabs. Banana, raspberry, or melon bits would provide both
hydration and quickly digested energy, if he is interested. He may be used to only one food source, like crickets, so you may have to introduce new foods slowly. Provide several small meals a day, as opposed to one or two big meals, so as not to overwhelm his system. Offer water from a small (1CC) syringe or eye dropper, by drops on his lips, avoiding the nose holes, of course. If he wants more, he will start to lap it up with some enthusiasm. Again, moderation is required...just a few CC's at a time, until he is stronger. We do not want to cause runny stools! He has enough challenges.
Minimal handling, until he is stronger and has had a few days--even a couple weeks--to get accustomed to his new environment. Reduced stress is always good, but especially important for Steve, which is why a classroom environment is so bad for any sick animal. Of course, handling as needed to keep him and his viv clean...and be very sure to wash hands thoroughly between handling Steve and other pets! If you can provide his own feeding tongs, etc, that would be best for both Beardies...some things are better not shared
Sticking to a routine also reduces stress, as they like to be able to predict what will happen day to day.
Keep him in a quiet, calm room, away from main traffic areas and loud sounds, like barking dogs, doors that are constantly opened and closed, or TV. Tell people who approach his viv to keep soft voices; no laughter, no loud talk--and slow movements; no hand waving or pointing. (I call this my wild or sick animal etiquette speech) I also tell people to keep at least three feet back from the viv or cage, because they really do not understand how threatening they can look, when they stick their faces right up against the cages, and stare! People are naturally curious about a new animal, but I limit any viewing to one five minute period per hour. Only the main caretaker (you!) really need approach until he gains his strength.
I am so relieved you are taking this poor fellow home!! He looks so weak and tired, and sad:Beardies are such emotional creatures--I call DeziLu my "Drama Queen"! (But just because he is a drama queen, does not mean his feelings are not real, to him! So, when he is being particularly dramatic, I try not to laugh at him, in his presence)
Please keep us posted as you find time! You are being an angel of mercy to this little guy, and I know that God Blesses those who care for His beloved creations!