I'm beginning to seriously question the intelligence of these sheep.
This afternoon, I was busily working away, trying to get done so I could run some errands in town. I have the windows open because it's 73 degrees today and absolutely beautiful outside. I took my headphones off for a few minutes and heard one of the lambs making a huge racket. I went to the window and saw Cocoa in the sheep pen. He was on the opposite side from the gate pacing back and forth along the fence. The rest of the sheep were on the other side of the fence eating grass, ignoring him. I watched for a few minutes and realized he was stuck in the pen. Well, sort of. The gate is 16 feet wide, and is wide open during the day so they can come in and out whenever they want and also so I don't have to run out there and let them in if it storms. I close them up in there before dark every evening but other than that, they're on their own.
Clearly, he'd gone in there for some reason and then got upset because the other sheep were outside the pen and he couldn't figure out why or how to get out. This went on for several minutes and he finally flopped down on the ground in frustration. I thought about going out there to help him but less than a minute later, he leaped to his feet, dashed through the gate and ran as fast as he could around to the other side of the pen where the rest of the sheep were eating. Frantically baaa'ing the entire time.
Oh, did I tell you? He did the exact same thing last week.
I do not know how these things ever evolved in the wild...