Kekeke, I'm terrible at curling up while sleeping, I swear. XD
Whenever I'm sleeping at home I usually just trample my blankets up (my bed is NEVER made) and find a comfy position to curl up in.
At school I usually sleep with both arms out-stretched over the desk and using them as a pillow.
I suppose that could be seen as 'dog'ish, ne? c: