A Mystery

This morning I got up and went to let Ruger out, but saw he was already let out. (Aaron had let him out after his phone call from the plant at 6am.) So, I stepped outside to give him his morning four cups of food. He came running from around the garage and just started crying. And it was a terrible, awful, super loud cry like he had just gotten hit by a car! I had no idea what was going on...and he continued to cry all the way into the house and for about 3 minutes IN the house. Safe to say he woke up Aaron and Karsten! He finally eventually stopped crying and I was able to get him into our room. He jumped up onto the bed, cuddled up to Aaron, and they both fell back asleep.
I let him back outside after about 45 minutes because we had to leave for our church fellowship meeting and I was a bit worried about what he'd do. He went out happily though, and when we arrived home around 12:00pm and I let him in, he came in without crying and greeted us all, tail wagging.
I'm still baffled about what happened this morning. I thought possibly it was the cold, but he has been outside all winter during the day and he doesn't seem to mind it at all. (I actually thinks he likes it more than the hot, summer days.) So I crossed that possibility out. He was favoring his back left foot when I let him in when he was crying, but he quit favoring it once we got in the house.
I have no idea what was going on this morning because, like I mentioned before, it was not a little whimper. It was so painful to listen to!
I'm just glad he seems back to normal. I snapped the picture below of my two boys after the whole incident happened. I love these two.