Baby hamster died

One of our baby hamsters died.

It was trapped between two flaps of cardboard on the inside of the pizza boxes and was literally flattened to death. We didn't even know until this morning when brother opened the box and saw a furry head sticking out. I believe it struggled to death because the head wasn't squashed, just the body flattened. Perhaps the windpipe broke or the bones or something. We're suspecting it was because Olivia pushed down the cover of the box very hard yesterday and the baby didn't have enough time to react to it.

I wonder if the mother was trying to pull it out or something. Brother said when the body was being cleared, the mother was sniffing at the spot.

=(