Charlie started to whine and cry on Saturday night. He wouldn't move off his bed, even to eat. We were all pretty worried about him. This morning, we took him to the Vet who determined he has a pulled muscle on his rear left leg - he's much happier now. It's amazing how helpful it is to have pain medication and muscle relaxants! He's still favoring his leg, tender on his side, but our happy, loving dog is back!