Every time I look at this, I wonder why Anna looks like a youngster to me. Do I just not know what rats look like? XD Does it have something to do with her sleeping? I don't know, I think it could be something like the messiness of her fur, mostly bear ears and curled up paw-hands.
Yeah, intellectually, I knew she was an old lady there, but I didn't have much of a frame of reference. Also, holy hell those are cute! ... Well, I don't find the third one cute. The third one looked like the image my memories brought up when I tried to think of a baby rat.