My robo hamster that I got about a week ago suddenly came out of his burrow at around 8pm (which is very early, he normally comes out after midnight) and I found him doing this anxious scratching behaviour against his cage, on the ground and glass jar, and also backing up against the glass jar very as though he was having a really bad itch that he couldnt reach??? He went back into his burrow shortly after this video was taken and I could still hear the noises for about a few minutes and it's stopped now. I'm worried that it might happen to him again, and since he's new and still in the taming process, he's afraid of me right now. I have no idea what's up with him!
Link to video:
Robo hamster scratching behaviour - YouTube