Hi! I have an 11 yr. old male rat adopted from ratbone 5 years ago.  For about a week and 1/2 he has been waking up at 2-3 a.m. to go out and he goes to bed when we do around 10 pm.  He also squats when he pees instead of lifting a leg.  I don't know what is going on! He never would wake up in the middle of the night before. I live in Chicago and have been thinking it's because we don't walk at nite because of the frigid temps.. Help, I called the vet but can't get in till next week, could it be his diet? I feed him Venison and Rice Nutro dog food. thanks, corkysmom