Winter is a Siberian Husky who is great with people and with the other large dogs in his home. However, when out on a walk with his owner, a little unleashed terrier comes bouncing over, barking and putting up a fuss. Much to his owner's shock, Winter lunges at the little dog, teeth bared. Fortunately, Winter's owner stops him before any harm is done to the little dog.
Winter's sudden aggression to the little dog came as a surprise to his owners, as he gets along well with other dogs in his house. But, any dog who is confronted with another dog invading his personal space or territory and presents anti-social behavior, can react with aggressive behavior. Because Huskies are large dogs, they can present more of a danger to other dogs if they don't get along with them. Also, Huskies are one of those dog breeds that has a high prey drive. Perhaps because indigenous populations that use them as working dogs have not breed this tendency out of them, as it is useful for hunting and defending against other predators in regions where Husky dogs are commonly bred.
Because Huskies are well known for being highly socialized with people and living in packs, it is often not anticipated that they would show aggression toward other dogs. It is possible though, even the usually laid-back Husky may not get along with other dogs if they are not introduced properly, feel threatened, or if their prey drive is triggered.
Introducing dogs to your Husky on neutral territory, if possible, will help reduce territorial behavior from either your Husky or the other dog, which could quickly escalate. If you are training your Husky to get along with other dogs, finding other dogs that are well socialized to model appropriate behaviors is extremely useful. Introducing two unsocialized dogs leaves a lot of room for errors in body language and communication to occur. Also, using very high value treats to reinforce positive social behavior with other dogs will be important, as you need a reinforcement that is more salient than any drive to be aggressive with the other dog. As gradual introduction is often employed, having barriers or markers to help introduce dogs slowly will be helpful.