The two hamsters I just bought at home are only one week old, and one of them is very greedy. Now he walks flat. Will it be okay if he walks on his stomach?

No problem. Rats hide food in cheek pouches, so they look flat and prone when they walk. I suggest you don't feed them too much. The mice didn't know how full they were, so they ate them all. Since there are two, just put two more than twenty-five cents in the dish bowl, otherwise the rats and mice will hide some under the sawdust, plus the pole and urine, and the dish will form a black pimple. . It is not easy to brush the cage.