I think it is a very good idea to speak with a dog behaviorist. Eskies are very timid dogs, and if not trained properly can give the impression of being very aggressive dogs. The people who originally had the dog may not have been familiar with how deal with a dog of that temperament. It is important that you speak with someone who has training in that area. Another thing you may try is to speak with someone with an Eskie Rescue group in your area. I know that the coordinator in my area is very knowledgeable in training skills and is always willing to assist someone who has acquired a rescued Eskie, so that the dog and the new family can live happily together. I wish that I were more knowledgeable myself, I would love to give you some more concrete advise. But there are many here who do have a good knowledge of dog training, and I am sure that you will get some wonderful advise. I wish you good luck with your new dog.