Is this normal?

Does your cat jump into the fridge, guarding its contents? Is this normal? As a new cat owner I’m learning as I go but this behavior is beyond me. I thought cats regulate their eating, unlike dogs. Fiver loves food, maybe  my habits are imprinting on him? When we found Fiver, he was so thin and hungry, could it be food anxiety?  Thoughts on this matter are welcome, please comment and let me know what you think.  Thx!