Hi my rabbit was fine earlier eating and drinking and then strangely when it came to being put outside for exercise he just layed down, he did do some toilets but less poops than usual. Ever since he was put back he just layed in the same place. I have no idea what is wrong. We have used a syringe to get him to drink some water but could not get him to eat. For now we have put him back and drawn a marker on the water bottle to check if it goes down. I am worried as he was fine one moment and then all of a sudden just will not eat. Does anyone know if it is a virus or other condition?