The woman reveilles and I are housesitting for has two cats, Meow and Keyshe. Keyshe is the smarter of the two cats and is at least 21 years old. She spends most of her time outside, she goes exploring, and if you put out more food than she can eat, she only eats what she needs and saves the rest for later. If we arrive home late and Keyshe hasn't been fed on time, she will sit on the front walk and she will meow at us a few times, scolding us for not feeding her on time, and then she will wait patiently for her supper.
Meow is the dumber cat. We hardly ever see her outside, though she has been exploring more recently. She does not self-regulate her eating and will eat whatever food is put in front of her and she tends to be overweight. The minute we arrive home (early, late, on time, whenever), Meow will start meowing, complaining that she has not been fed. She will keep this up, meowing every 3-4 seconds, until her food dish has been filled and put down so she can eat.
This said, reveilles and I were watching a movie this evening. As the movie was ending, I heard Meow calling to us from the basement. I assumed she wanted more food. As this would have been her second dinner, I was going to open the door to the basement and spray her with water to discourage this behavior. When I opened the door, I was very surprised to find her at the bottom of the stairs looking up at me rather proudly. I quickly realized that she had killed a mouse and I thought that she was going to leave it for me as a present. After a few seconds, I heard squeaking and realized that she had caught it, but hadn't yet killed it. I called reveilles over to tell her. Once Meow was satisfied that we had recognized her great hunting prowess, she bent down, the squeaks ended, and we heard the sounds of crunching bones. She had her second dinner after all.