2. See if the coat color of hamster is shiny, smooth and shedding. Hamsters generally prefer cleanliness. If the coat color is dull, not smooth or falling off, it means that the hamster is sick or old.
3. See if hamsters walk harmoniously.
4. See if the hamster's tail is clean and the poop is dry and hard. If so, hamsters may have diarrhea. If it is serious, you may suffer from wet tail disease, and time is running out.