Tikus, mouse in Malaisan, was Constant's dog since 1990 and passed away a few days after Constant. Constant used to tell about the way they met. After his dog Waldo died, he went to the dogshelter to get a new dog. Tikus was the saddest looking dog from the shelter. However, as soon as Tikus saw Constant enter, he stayed by his side. When the little dog even followed him to the toilet, Constant decided that he would take him home. They were inseparable for 15 years.