Hi, I had a question about moaning or groaning or grunting. I am not quite sure how to describe the sound my dog is making. He started to make this sound this past week. He does this low moan pigeon-like sound. He usually makes this sound when he is in his crate in the middle of the night either trying to wake me to let him out for potty or when he is trying to get up to our bed (he is still too small to jump up to our bed). I noticed when I ignore him...his low pigeon-like moan turns into a whimper...like a little whine. When my pup makes that low pigeon-like groan -- is that a sound that dogs make when they are upset or mad??? Thanks!