My dog snarls when other dogs get close to her face (aggressive, train)

[NM posts]

Help, how can I fix this?

This started last fall when an off-leash dog aggressively charged her and head butted her to the point that my dog's tooth was driven into her cheek, requiring surgery

Since then she's been very reactive when dogs run up to her suddenly, or when they put their face right near hers. She actually loves other dogs but there seems to be a line that they cross, and when they get that close she snarls. Fortunately it's a warning snarl and she's never attacked anyone or any dog...but is that just a matter of time?

I don't even take her to the dog park anymore except for around 7 a.m. when nobody is there, and I stand by the gate. I have taken her a couple of times since this happened and she's been great with the other dogs, but I'm just afraid of what could happen, and lately this problem has been getting worse.

Last month yet another off leash dog ran up to her quickly - this time a wolfhound who just wanted to play but was huge.

Just before, my dog snarled at her favorite dog friend for putting his face near hers.

How can I train this out of her? The wolfhound incident was in our obedience class! She's been worse since the class!

[passwithoutatrace]

Find someone with a dog who is willing to work with you. Slowly lead your dog towards the other dog. If your dog shows aggression then immediately correct her. If your dog does a good job then reward her with treats. Eventually she should learn to associate dogs being around as a good thing.

One of our dogs has leash aggression issues, but he loves to be off leash and play with dogs. We lead him towards other dogs. If he growls then he gets nothing (we turn away from the dogs and ignore them). Eventually he learns that it is boring when he can't play so he calms down and can be released to go play. He has improved a lot since we got him.

Just my suggestion.

[buddy5]

How big is your dog?
What kind is it?
How old is it?