Last night I noticed my gerbil acting incredibly strange. He was good all day I gave then fresh food and water and he was alert and oriented. Last night I checked in and he was very dazed. He had labored breathing he was laying in my hand as if he were dying. When he tried walking he was just wobbly about it. So to take precaution I separated him from the other 2 boys because I didn't know and still am not sure what the problem was/is. After him spending the night alone with his own food and water when i checked on him he was right back to normal awake, alert, oriented. Can anyone make sence of this. I tried thinking of every thing but nothing adds up. He isnt bullied out of eating and drinking because I watch them alot and they all always get water they have 2 water bottles and more food then what is probably necessary. I do not give them anything else except carrots. And they havent had those in awhile. Any ideas?