When we left for vacation 3 weeks ago, our lab was old but reasonably functional. But in the three weeks we were gone, he aged an awful lot. He barely gets up anymore, even for food, and is having a difficult time finding his food bowl and gets confused that it is okay to eat. In the three weeks, it is like he went from an old person who is a little confused at times to drooling in a wheelchair. He was loved in our absence (our son and our dog-crazy friend watched him) and exercised daily during that time, but it is like the character said in The Sun Also Rises, it happened gradually then suddenly. So it seems to be with our dog’s aging. Poor guy.