I have a two year old greyhound x (I think). She's from the pound so not sure what her history is prior, but she had a few behavioural issues to start with but all have been ironed out except one. The vet and other dog park owners describe her as having "a wonderful temperament." She plays well with dogs she knows (she can get a bit high energy with them, but easily distracted and called away).
However, when it comes to dogs her size and larger that she doesn't know, she often stares intently for a second or two and then snaps in their face. She never makes contact and it is over very quickly, however I am very concerned that one day she'll do this to the wrong dog. She was an anxious dog when I got her, however through keeping up a strict routine, she is now quite calm.
Usually the air snapping thing happens when I take her to the dog park outside of the usual times. The obvious answer would be to stick with what we usually do, however I am at a point where this is not always possible. For example, I want to take her and my other dog camping and to the wetlands, and to put them in a kennel when I go away (haven't had a long holiday in years because I own dogs). In these unfamiliar environments, she will undoubtedly air snap when encountering larger dogs.
Also, sometimes a new dog will come to the park at our usual time, and with this behaviour it is very unfair on the new dog. What is the best way to discourage this behaviour in her?
She has been very socialised as far as I can tell. Her puppyhood was in the kennels and with me she has socialised with other dogs on a daily basis (except for a six week period when waiting for her puppy vacs to finish).