Why do my spayed/neutered dogs fight? How to stop their aggression?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered | 7 months and 3 days old | 15 lbs
I have two dogs, a boy and a girl, and since they have been fixed they fight all the time. How do I fix this problem?
2 Answers
Most Helpful Answer
Published on July 7th, 2017
Hormonal changes that occur after being spayed or neutered can sometimes cause tensions. Keeping the dogs separated unless supervised may help reduce fights. If you notice one or both dogs becoming too excited or agitated, separating them and giving them a chance to cool off can help. Removing items of contention such as treats or toys can also help reduce fighting. If the fighting continues, or they are unable to be together at all, seeking out a local veterinary behaviorist or trainer in person that can observe their behavior may be useful for formulating a training plan to help both dogs get along again.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on August 13th, 2017
I am sorry you are going through this. most of the time this type of behavior can be fixed but it will take lots of time and consistency. I would recommend bringing a trainer into the house to observe how the two dogs interact and where the issues are. I would recommend feeding them separately in different rooms/ kennels because food can stimulate aggression. I would also eliminate all toys because they can fight over that. There is something that is causing stress between the two dogs or even competition for attention driving the aggression. You can try adaptil collars or plug ins through out the house. This is dog pheromone to help decrease stress as well
1Pet Parents found this answer helpful
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