Monkeys Seals Tigers Check out these eight action-packed scenes to see what happens during a full day at a busy zoo. In each picture, the zoo buzzes with activity. Visitors, zookeepers, and animals move from place to place. Look for the changes that happen. Keep your eye on the clock too. By spending a whole day in the same place, you can watch events unfold from morning to night. The Time Goes By series let's...