Kinda long, please bare with me.
I have had Dakota for 2 1/2 years now. He is a good dog 95% of the time. Little background, I have been living with my girlfriend for 6 years now. She was there since Dakota was a pup. Dakota is an Australian Cattle Dog.
The problems started very shortly after he got "fixed". He bit Jennifer pretty good. It seemed like Dominance Aggression so Jenn started a class with him and he responded very well. (he hates other male dogs but, that is another story) So, we finished the course and tried socializing him even more. The trainer we had was great, she spent 30 minutes after class just on Dakota.
Things were good for a while then Dakota bit Jenn's mother. Her mother was going into a cabinet by his food and he was eating. Possesive Agression. So, we worked on that. He got better, there were still a few things he just couldn't have anymore, rawhides and such because he would still growl. You could call him away from it and make him sit, then go pick up the rawhide and he would be ok.
things were good for a while again then he bit Jenn. We were at the Drive in and Dakota was in the back seat. Jenn reached back to get a drink and he bit her arm. After this we brought him to the vet to have him completley checked out. He was in good health. The vet recommended taking him to Cornell Animal Hospital. It's a teaching vet hospital, very well known from what I understand.
At Cornell, the doctors spent 2 hours with him. They tested his agression in many different ways. He didn't lunge once. Dakota is currently on medication, please forgive me I forget what it is. Once a day. Since Cornell (about 3 months ago, things have been good. 3 days ago, Dakota lunged and bit Jenn again , breaking the skin. I am at a total loss here.
He is great with me. knows all the commands and does them, even for Jenn. Sit, Stay, Settle, speak, wait, nice, etc. The one thing we noticed is, all the times he bit Jenn, it has been "that time of the month".
I guess I am here to spill my heart out hoping we are not alone. It is getting to the point that we may have to put him down and that would break our hearts.
PS: few things I forgot to mention. Yes, the doctors at Cornel are behaviorists. She actually wants to put Dakota on a drug for depression now. Yes, he has been hit. The only times he has been hit was to get him away from Jenn or her Mother when he bit them. I can wave my hand all around his face and he doesn't flinch like a fear agg. dog may. I have had dogs my whole life, I grew up with them. Jenn has never had a dog, nor anybody in their family. It can be tough training a dog and human at the same time.
I guess I am just pulling at strings here. I love Dakota, he is a VERY smart and loving dog........95% of the time.