Cats are nature’s hate-seeking missiles. If there’s a houseful of guests, only one of whom dislikes or is wildly allergic to felines, everybody knows that’s where the household cat will make a speedy beeline and glue itself to the ankles of whichever sufferer would rather the cat were somewhere about a thousand miles away. As it happens, when they choose to do so, cats can also sense affinity. Some are so quick to attach to the humans who will indulge their every whim that they must probably have a sense transcending the dimensions we with our merely mortal five senses perceive.
In both, I have seen parallels in human form. There are some who manage at every turn to recognize quickly and attach themselves instantly to others who will love and appreciate them and all their gifts—and some, conversely (or perversely) who have only the knack of finding and sinking their hooks into people who would rather they were about a thousand miles away.