When I open the refrigerator door, my cat tries to climb in there. She likes exploring. Yesterday, though, I had just been grocery shopping, and there was a big bag of raw spinach, barely tied closed, resting on the bottom shelf. My cat made a beeline for it. She nibbled on the leaf that was sticking out of the bag, then began determinedly pulling it through the hole and out onto the floor. I helped. She ate that whole leaf and, every time I open the refrigerator, she dashes in to grab another one. Eventually I had to cut her off (can a whole lot of spinach be good for a cat?).
Meanwhile, she rejected the bite of wildly expensive ribeye steak that I saved for her. She doesn't care for fish. She also doesn't care for cheese, or popcorn, or any of the other things former cats of mine have considered delicious treats. Leave a bit of lettuce on the cutting board, though, and she's on her hind legs trying to swat it to the floor with her paw.