Good Morning and welcome. I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
. The only way to stop this behavior is to let Haggis know that you are the "alpha dog" and that this is bad behavior. I often will use a coke can with pennies and shake it to get his attention and then say a strong NO! If this is not sufficient, then Ultrasonic collars will work as well which can be purchased at the pet store. Purchase a DAP Collar (Dog Appeasement Pheromone) at the pet store. This is a canine pheromone that acts as a calming agent and will decrease anxiety.
There are many other training techniques that may help and are listed in the site I will give you. It is also important that you have your vet examine him to be sure there is not a medical cause for this behavior.....
Your vet will have medication that will help him past this and in your situation, I would strongly recommend this.
You may want to contact a Veterinary Behaviorist and this site will help you find one near you: www.dacvb.org
Does that make sense to you?
Please let me know if you have ANY other questions. My goal is to give you 100% satisfaction and if you are not yet satisfied, please Reply so I can clarify for you
Sincerely, XXXXX XXXXX
Thank you so much, Allison for your kind rating. It is very much appreciated! Even though you have rated, we can still communicate. If you have other questions, please Reply. I am always happy to help. I hope this will help get Haggis under control.
Have a wonderful day!