I know my cats think a lot about food and water. But, they also think about sleeping, hunting, and playing. I can be petting one of my cats, and if he is wound up from not being able to get outside for a couple of days, he will start attacking my hand--at which point, I tell him "Don't bite the hand that feeds you."
Cats are also sensitive to emotions, however. Once, I had to bathe one of my older cats who got skunked. The youngest cat was in the kitchen (as I was bathing the older cat in a plastic tub in the kitchen sink). The older cat started wailing like I was killing her, because I was holding her in the water to get her washed. The youngest cat ran over to the sink and started mewing anxiously about it, with big, terrified eyes.
That cat has also become distressed when he saw me whimpering in pain one night. He began mewing, hopped on my lap, and started rubbing his head under my chin to comfort me.