Pets

Indoor cats, I'm assuming. They probably could actually split a can of wet food a day but you probably should leave dry food available to them at all times. Cats are sporadic eaters so leaving them dry food available, something with nutritional value, and cut the wet food down, be gradual, they may settle down. They eat to stay warm and they may sense the current conditions and have a response by asking for more food since you mete it out. There is also a psychological security in having something available at any time. It's kind of a trade you may with them for keeping them from being hunters.

Just my 2 cents.