At a park a big dog ran up to my Jack Russell and started chasing him around, my Jack Russell was so traumatized that he wouldn’t even let me pick him up and kept making a weird whining sound for a couple of hours.
Now whenever he sees any big dog at all, he wants to fight it. When a big dog passes by the yard, he tries to get out and starts growling.
He won’t even get along with NICE big dogs who try to befriend him.
my jack russell was ripped open almost dead from a pit bull attack and i treated her exactly the same after the incident as before and she never had an issue with any dog big or little or even pit bulls … might it be YOUR anxiety that is putting the dog off ??? your dog was not disrespected, it was afraid at the dog park … from this "vicious" attack, did your dog even require veterinary care ??? or was it just scary for you to experience and the dog see’s the owner is afraid and acts accordingly … why not put your dog in obedience classes … it is a great way to desensitize nervous dogs around other dogs in a safe environment … and you do realize that a jack russell terrier, as a breed, do not love other dogs at the best of times (even when then compete they have to be muzzled) so if you think you are going to have a nice little jack walking beside you and social to dogs you come across, you are in denial, unless you put this dog through every single level of obedience training … and why not work on controlling your jack … if he barks at passing dogs, firm no and then physically remove him from the visual stimulus of the other dog and engage him in a suitable activity …