My wife and I came back from vacation early this week. We had our GSD(3 y/o) male and a puppy GSD borded at the breeders house. One day after work, I took both dogs outside to play and go to the bathroom. The next day, the male GSD looked sad and didn't look well at all. We do have a cat and our 12 y/o son that lives there as well, but those two are on vacation in NC. Lately my male shepherd has been licking his paws raw and has not been alert or happy to go outside like he always is. The male does eat, drinks, and uses the bathroom w/ no problem. Is it just that the male just knows that the cat and my son are missing and misses them dearly or does it sound like something else? Your advise is most appreciated. Thanks.