I had a cat that, one day, started sitting on the fence at the bottom of the garden staring at the house opposite (that happened to have two kittens). He had never done this before so it was very noticeable that he was doing it for long periods every day over nearly two weeks. Then, to my surprise, a removal van turned up and the owners of the house he had been staring at moved out. After that, my cat never again sat on that particular bit of fence staring at that house! I hadn't known in adance that the people were moving out but it appeared that my cat did!