Animals get tired, just like people. This monkey must have had a very busy day; it is obviously all tuckered out, pooped, spent, down for the count, drained, bushed, outta gas, weak, sapped, exhausted and just plain tired.
His grand kids must have just gone home.
Thought for the Day: On the seventh day, God rested. His grandchildren must have been out of town. Gene Perret