The methods to solve the problem of hamsters fighting mainly include the following aspects:
Separate Them in Time: Once you find that hamsters are fighting, the first thing to do is to separate them as soon as possible to prevent the situation from escalating. You can use gloves or small tools to gently separate them. Avoid grabbing them directly with your hands to prevent being accidentally injured.

Provide Sufficient Personal Space: Each hamster needs ample independent activity space. It is recommended to prepare a separate cage for each hamster. The cage should be large enough. Generally, the bottom area of the cage for an adult hamster should be 120 x 60 centimeters to avoid fights caused by insufficient space.
Separate Feeding and Drinking: Place food bowls and water bottles in different corners of the cage to avoid fights caused by competing for food and water. You can also spray a pet-specific bitter spray on items that the pets often gnaw on to reduce the behavior of competing for them.
Provide a Rich Environment and Toys: Set up multi-layered small nests, tunnels, and toys in the cage to provide areas that hamsters can enjoy alone, reducing direct contact and conflicts. Equipment such as running wheels and exercise balls can also help hamsters burn off their energy and reduce the likelihood of fighting.
Avoid Sudden Environmental Changes: Hamsters are very sensitive to environmental changes. Frequent changes in the environment can cause unnecessary stress and tension. It is recommended to keep the environment stable.
Observe Their Behavior Carefully: Pay more attention to the behavior of hamsters in daily life. Once you notice any signs of nervousness or small aggressive actions, intervene in a timely manner to prevent them from actually fighting.
Treat the Wounds: If a hamster is injured, first clean the wound with normal saline, and then apply an appropriate amount of pet anti-inflammatory ointment. If the wound is severe or covers a large area, it is recommended to simply stop the bleeding and bandage it, and then take the hamster to a pet hospital for treatment.
The reasons why hamsters fight may include:
Territorial Awareness: Hamsters have a strong sense of territory. If there is insufficient space, they may fight for territory.
Mating Season or Pregnancy: During the mating season or pregnancy, the emotions of hamsters will become unstable, and conflicts are likely to occur.
Insufficient Resources: Insufficient food, water, or activity space may also trigger fights.