If your hamster has a respiratory illness, its eyes and nose may also look red.
Remember that hamsters tend to hoard food in their cages. [11] X Research source If your hamster is showing other signs of respiratory illness, though, you may see leftover food in the cage because your hamster feels sick and doesn’t want to eat—not because it’s hoarding the food.
If your hamster looks sick and stays in its bedding, do not try to force it out to play.
Poor housing conditions, such as drafts, can make a hamster sick. Your vet may inquire about your hamster’s living environment.