What was the routine of Mij in London

 In London, Mijbil, the otter loved to play with a ping pong ball. For hours he would be engrossed in playing with the ball and a broken suitcase. The author would take Mij out for a walk on a leash as if he were a dog. On the way back, Mij would jump up on the wall of a primary school and run the full length, thus distracting the students as well as teachers.