To dream of cat food represents thoughts that feed self-deception or illusions you have. may reflect new ways of fantasizing about something that is impossible. It may also self-defeating beliefs that encourage irrational opinions of yourself.
The symbolism is based on cats reflecting false illusions we have or our need to feel good about things that are unrealistic.
Example: A man dreamed of feeding a cat with . In waking life he believed that he could never be with a woman again. Feeding the cat reflected how he was coming up with new negative ideas about himself that encouraged the false illusion that he wasn’t good enough to be with a woman.