I have had dogs do that when they our sick or in heat. Or injured. I have also had cats do that. My pig he eats when he wants all the time if you let him. If you don't feed him at 4 am every morning he will meet you at the door . He has arthritis . So he shouldn't move out of his pen. Put he loves his dad. My rooster did that when he got hurt when I was in hospital. He wanted my attention treats of his choices there funny that way.