LOL, i can easily imagine a hamster doing that. Although, i cant say i've ever seen mine do that when i've just came into the room or put a light on. Occassionally, i have seen them out and about and all of a sudden one would 'bolt' in to their house and back out again
They would do this even though no sudden movements or noise had been made
Thanks for explaining the mounds of bedding that Sour seems to be making, she is crazy :P Shes still doing it but its just put my mind to rest that shes not doing it as shes depressed or something. I was just concerened that as she didnt have company she was losing her mind