When I first adopted Tess, she never left my side.
Then, very slowly, she started secluding herself. It happened slowly so I thought at first I thought she was becoming more confident and independent. Last winter, she spent so much time by herself I was pretty sure she had Seasonal Affective Disorder.
Even though she's snapped out of it, we'll find her lounging somewhere secluded. And although she still is definitely a snuggler, it's always on her terms - and we have to sit very still so we don't disturb the princess.
Is you dog a super snuggler?