When I first saw all those hamsters in the same cage, I was thinking, "Soooo they are just going to conveniently leave out the fact that certain hamsters have a tendency to fight like crazy and kill each other. That and hamster mothers sometimes eat their babies. Those babies are lucky to have grown up."
And then the manga addressed the baby eating thing a few pages later. The author surprised me that he would have the kid telling the other kids about baby eating hamsters. ?