Pavlov's cat

Our cat is old now - rather stuck in her ways. She sleeps a lot and whilst she likes the outdoors, it's better when it is warmer and she rarely goes out without an adult.
So quite why she should be hungry is a little mysterious.

Cleo - working hard at being a cat, at eating,
and of course, sleeping.

For example, just today she was fed at the usual time. Morning, and again just before I came home in the evening. But we went out (urgent shopping you understand) and when we came back she was all animated to see us and demanding food.
I have a theory. That she associates our arrival with eating! This has conditioned her anticipation in much the way described by Pavlov with his dogs. I will try explaining that it is only ignorant dogs that are supposed to behave like this. Not cleaver cats.
I will let Pavlov's descendants know the result.