Three short stories about two children and their cat. They are a brother and sister. In one story, the cat eats all their aunt’s goldfish, one at a time on successive visits to her house, and they manage to gradually replace them one at a time so that she never realizes. In another story, burglars break into the children’s house when they’re home alone and the cat scares them away. My grandmother bought this book for me in the mid-80s. I believe the format is somewhat taller and narrower than a standard book. It has illustrations throughout, they are sketchy black and white, possibly with touches of red, blue and yellow. Not sure whether it would be classified as a picture book or an early reader.