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Why does my dog fight other dogs, even when they just want to play?

Updated On September 23rd, 2025

My dog always up for a fight with all dogs, even if they wanna play. I'm not sure of this behaviour with him. Could you advise.

2 Answers

Most Helpful Answer

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Answered By Christie Long, DVM

Veterinarian, Certified Veterinary Acupuncturist

Published on March 5th, 2017

Unprovoked aggression can have many causes. You don't specify whether or not your dog is neutered, but if he's not, I would consider it very likely that his aggressive tendencies are related to testosterone, and schedule surgery to get him neutered, as removing the source of testosterone (i.e. the testicles) will help tremendously in controlling his aggressive tendencies. If he is neutered, then it's likely that his aggression towards other dogs is rooted in fear. He will need some careful training to help to reverse these feelings, and it may be quite difficult, but is certainly possible. Talk to a trainer in your area about starting with a good general obedience class, which will improve not only your bond but also his confidence level (and thus reduce his fear). You'll have to work to reward him for good behavior by using a small delicious treat to gain his attention and keep him from trying to go after other dogs on walks. In the meantime, always keep him leashed when he's outside in order to protect him as well as other dogs.

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Other Answers

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    Answered By Joy Fuhrman, DVM, MBA, CPA

    Veterinarian

    Published on

    Depending on your dogs breed, age and temperament you can most likely train him to socialize with other dogs. Find a good dog trainer in your area that will work with him. I would recommend slow introductions one animal at a time until he becomes more comfortable with other animals.

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