An Automatic Feeder This cat owner uses an automatic cat feeder to keep her overweight cat out of any extra food. These RFID feeders (like the SureFeed Microchip Small Dog & Cat Feeder ($150)) are usually triggered by a chip in a collar worn by the cats that are using the feeder. In this case, Hercules doesn't have a chip, so the feeder won't open for him. Image Source: chewy.com SureFeed Microchip Small Dog & Cat Feeder $150 from chewy.com Buy Now