That's so sweet Mary. I've never noticed my cats checking on each other except when one of them wasn't feeling well. Storm will play nurse to them and make sure that they are okay. As far as the water dish goes, if Storm wants to drink from the dish and Cirrus or Sunny is already drinking from it then he'll make them move. He's the alpha cat so they back down. Maybe you're seeing the pecking order in your cats. Do you know which cat is the alpha cat?