Frog is Frightened  (English, Paperback, Velthuijs Max)

Frog and his friends, Duck and Pig, don't believe in ghosts, until they all hear frightening noises in the dead of night. They huddle together for comfort in Pig's bed, but in the morning it is Hare who gets a real fright when he finds Frog's house empty and gets no answer at Pig's because the three friends are now fast asleep!