It's a tape measure!
I had my trusty tape measure beside me as I was knitting this morning because I am getting close to the toe and need to know when to stop knitting the foot. Charlie was also beside me on the couch. Little did I know, he was eyeballing the lamb. I still didn't suspect anything as he nonchalantly got off the couch and walked over to the door, one of his favorite places to lie down. I just happened to look up and saw this:
That's right! He had the sheep by the tail!