None of mine does it unless there is something they want... Bennie does it when he needs to go out, Boeboe does it when she's bored and Joey when it's around food time. Well, they don't whine but they walk around like they are restless, but it doesn't happen very often.
Has he done it all his life or did it suddenly start? Maybe he's hurting or is uncomfortable with something? Can something be bothering him? Ears, folders, teeth? I don't know about food, maybe tummy pain? My Bennie can't eat Lamb and Boeboe is not doing well with dairy... It's all guesses Hopefully someone will come along that can explain it