Well, my old pal is approaching the end of his life soon. My Bullmastiff is 10.5 years old. He has had great blood work even up until now. However, he has had increasing issues with the back half of his body. He's slow to get up and slow to move around and has to lean against something to sit upright. Although he's been slow to move around, he's still alert and wagging his tail and eats and does everything else fine. Today we found him to have released solid bowels next to himself and unable to move. I gave him some Deramaxx for pain and he improved enough to want to get up. He could only go 15 feet and laid/fell back down. We are trying to get him to urinate because we know he has to go outside but cannot. We tried supporting him with towels and do the work for him walking but it wasn't enough. He eats fairly well and drinks fine but we limited his water intake a bit as we knew he already had to go. We called in to see if we could have a house call for putting him down and we can but haven't decided to do it yet. He doesn't whine or anything and lifts his head fine and wags his tail easy. I don't see it being his spine or he couldn't do that I don't think. I am just thinking its a disc or hip issue. I will stay with him through the night tonight and see what to do tomorrow. Jesse has been with me for over a decade.