Poey compares the fog like the cat as cat come into our home and that we can even notice same way fog come quietly and come back without our notice.Fog come into the and sat down like the cat as cat by lying his knee and disappeared by seeing all thing
The poet compares the fog to a cat. Fog is conceived as a cat who comes quietly and stealthily, sits and then goes quietly. Fog appears without a warning all of a sudden. It also disappears in no time. The movements of a cat are also sudden and unpredicable like those of the fog.