Hamsters may feel very cold when they sleep together. If the ambient temperature is relatively low in winter, you should take measures to keep them warm to prevent the little hamsters from catching a cold, or from being directly frostbitten or frozen to death. In addition, if the ambient temperature is not very low, but hamsters like to sleep together, it may be because the environment is too noisy, because hamsters are less courageous and they tend to feel insecure if the environment is too noisy.
Finally, hamsters are solitary animals and have a strong sense of territory. Under normal circumstances, small hamsters need to be raised alone when they grow up. , if kept together, they are prone to fighting and injuries.
