I am new to this website and have found the postings interesting. I have a 5 year old Pembroke Welsh Corgi who is a very good boy - in fact he has been an animal assisted therapy dog since the age of one. When he was a pup, I took him regularly to doggie day care, and I think something must have happened there to make him dog aggressive because he needs a "bubble" around and reacts badly if any dog sniffs his butt or otherwise approaches him. I first noticed this reaction when he was about one year old but I have been able to control the situation by staying aware of dogs approaching him. I thought that perhaps this was an adolescent thing he would outgrow as he seemed to be more tolerant lately, but this past weekend made me rethink that conclusion. I was visiting with my neighbor who has a male dachsund and the dogs were "greeting" each other when my dog bit his tongue! It was a very quick reaction and I suspect there was a stare occuring that I did not pick up on. So, now my fantasy of having a dog that will happily sniff and greet another dog are gone. So, my question to the group is - can I ever expect my dog to be social and greet other dogs or is this just a fantasy? Also, given this bite incident, should I pull my dog out of his animal therapy work?

http://www.leerburg.com/dog-agg.htm

You'll want to read the whole article, and all the Q & A following it...