It could be because:
- He wants someone with him while he eats, or doesn't want to miss anything so stays with the humans...neither Brody nor Mia like to eat alone. I even have to bring a mug of water into the living room just for them...I use a soup mug...lol...while we watch TV. Brody will 'signal' he's thirsty by making eye contact with me, then looking directly at my drink, then directly back to eye contact with me like he's asking for some of my drink. They will both go to the soup mug even if it's empty, then just 'wander' like they're confused when the mug is empty...lol They will both go get water and/food if it is right there where we are, but neither will go out to the kitchen 20' away for it. Also, if they are eating and I leave the room, they will quit and follow me...I have to always check to make sure they are not eating before I leave the kitchen.
- He is holding out for people food...then eats when he's figured out that's not gonna happen 'cuz everyone's heading off to bed. I have had many dogs who were polite but hopeful for people treats!
- He is just more 'nocturnal' than some other canines might be...my '8-yr-old granddaughter Chi' prefers to munch during the night and eats very little during the daylight hours...always has, according to my future-DIL.
You might try keeping some kibble with you and give a few pieces now and then during the day, too. You can experiment a bit, watching his response, to help you figure out what his 'motives' are.
Good luck!