Om Nom and Om No.
Cats being fussy eaters mostly happens when the vomeronasal, or Jacobson's, organ becomes sensitized to a specific food, at which point the cat will reject any food that doesn't fit the pattern it is expecting. Additionally, cats have been known to develop a fondness for "people food" such as chicken, French fries, pizza, bread, ice cream, carrot juice, olives, tomato soup, and carnitas burritos, as well as cat diet exotica such as corn kernels and diced cantaloupe. But many "people foods" are not good for cats; chocolate, for example, can be fatal due to the presence of theobromine.