- Post-operative pain. Neutering is a surgical procedure, and it's normal for cats to experience some pain and discomfort afterwards. This pain can make them irritable and more likely to lash out at each other.
- Stress. The stress of being hospitalized and undergoing surgery can also contribute to aggression in cats. Being in a new and unfamiliar environment, surrounded by unfamiliar people and smells, can be very stressful for cats.
- Changes in social dynamics. Neutering can change a cat's social hierarchy, and this can sometimes lead to conflict between littermates. When one cat is neutered, his testosterone levels will drop, which can make him less aggressive and dominant. This can cause the other cats to feel threatened or insecure, and they may lash out at him in an attempt to maintain their status in the group.
It's important to note that hissing and growling are normal forms of communication between cats, and they don't necessarily mean that a fight is imminent. However, if you're concerned about your cats' behavior, it's always a good idea to talk to your veterinarian.
Here are a few things you can do to help your cats adjust to their new situation:
- Provide a quiet and comfortable place for them to recover. Keep them in a separate room from other pets and children, and make sure they have access to fresh food, water, and a clean litter box.
- Be patient and understanding. It may take a few weeks for your cats to fully recover from their surgery and adjust to their new situation. Be patient and understanding during this time, and try to avoid doing anything that might stress them out.
- If the aggression continues, talk to your veterinarian. If your cats are still hissing and growling at each other after a few weeks, talk to your veterinarian. They may recommend some medication or behavior modification techniques to help resolve the conflict.