Its been over a month now that we have had our puggle. The potty training was tough and he still if left alone too long or watched closely he will go just about anywhere he wants. We keep him in his soft crate at night, he just whines way too much to be left outside and having a place to section off is way too hard in this house. He sleep very well in it and sometimes he likes to go and lay in and take a nap. The last two mornings I have gotten up to a mess in the crate, terrible diarrea. We have not changed his diet nor given him anything that he hasn't had since bringing him home. When we let him outside to go potty he either has loose stools or is straining to go. I am not sure what to do or if there is anything really wrong with him. Since we brought him home he has been eating the crab grass that I have unsuccessfully tried to get rid of, is this a problem? I have been told that animals eating grass can represent stomache problems but he seems just fine, still running around playing and all. Should I be worried?