After generations of breeding, the Jack Russell Terrier (JRT) can exhibit a rather destructive temperament. Through no fault of the dog, man's efforts to turn this canine into a hunting partner has stirred up an aggression characteristic in this animal that may not be suitable in a family environment.
Controlling Jack Russell Aggression
The first step in solving these issues is understanding the two kinds of Jack Russell aggression. One is completely in their nature and will be harder to control, whereas the other should be stopped in its tracks before it's given the chance to get any worse.
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Dog-to-dog aggression
This is the most common form of Jack Russell aggression and is something that's simply in their nature. These dogs are notoriously territorial and protective of their own, making them rather confrontational when faced with another dog. This hot-headedness, combined with their fearless nature, means that they can easily get into trouble - particularly when they start on dogs that are a lot bigger than they are.
Aggression towards people
Less common than the former, this type of aggression is much more frightening for owners. These dogs feel as though they are in charge and hold mastery of the house, even over human members of the household or other visitors. Likewise, some dogs are weary of strangers and may resort to aggression as a form defence, not defiance.
What You Can Do
Mercifully, owners do have opportunities to work on this aggression before it becomes too hazardous. Starting early is critical to success, encouraging the pet to reduce aggression with consistent positive reinforcement.
But just how can you stop this aggressive behaviour from taking hold? Socialization at an early age is the best defence. This can work for both types of JRT's aggression - you need to get your pet mixing with other dogs as much as possible so he doesn't view any strange dogs as a threat and if you take him to puppy training classes or visit friends with dogs he'll have no choice but to mix and get on well with other dogs.
Likewise with people. You need your dog to get used to being around other people, and that means not keeping him isolated when guests come round. Provide your pet with a range of experiences by allowing him to accompany you on outings so he can grow familiar with different surroundings. Even if some people still strike your dog as suspicious, frequent outings at an early age will instruct your dog that the majority of people are friendly.
A Jack Russell who is aggressive at home often lacks proper discipline. Do not tolerate such behaviour. Put your pup in his place by asserting your position as leader of the pack through steady and consistent actions.
Life should be on your terms, not your dog's, so only greet your dog when you're ready, keep him off the furniture, and only feed him after you've already eaten. This will not only show him that you're in charge but will also make him realize that negative behavior doesn't lead to good results, and he'll soon get the message.
Make no mistake; even though JRT aggression is somewhat instinctual, it can still be altered through your actions. As long as you are consistent and loving with your discipline, your pet's aggression will be replaced with affection within a short period of time.