This is the "Walking of the Penguins," or WoP. It takes place in Asahiyama Zoo in Asahikawa, Hokkaido. The cute li'l Batman villains are walked twice a day for a distance of 500 meters to help them exercise. I can't personally explain why they chose not to got with my suggestion of teaching them Taekwondo - it is a phenomenal workout.

Starting next March, they will be walked only once a day, because the snow will probably be gone, and that somehow means they won't be so plump and out of shape.
Mainichi

To do these fluffy little birds of the snow great honor, visit the main page for The Bento Bulletin by clicking this very Penguiny sentence.