Well, he's not ours, but a neighbor's cat I watch whenever they go away, Socks, has a really strange habit. He'll take a break when eating, go to the back door and meow at me until I let him out. Now, this isn't unusual, 'cause he's (mostly) an outdoor cat. What is unusual is how he'll go out, then drink water from the pond in the back yard, and then want back in. And he'll do this multiple times while eating, while he has a fresh bowl of water right next to him, lol.