ok, I got one. my new Dobe is 13 months old. she can hold her liquid for a long time. I feed her twice a day, usually at 6 am and 6 pm. I wait several hours after she has eaten to take her out, thinking this is enough time to allow for a bowel movement. I usually take her to the fenced in softball field next to our house, so we can throw the ball and she can go to the bathroom. the problem is, we get to playing fetch and she never gets around to pooping. I was out there for 2 hours this morning and she never went. she peed once, but not poop. any suggestions?