May 02, 2026
My Dogs are Attacking Each Other When Barking At the Door
Full Question:
I’m a stay at home Mom, I am the primary trainer & caregiver of the animalswe live on 3 acres, the dogs use a doggy door to go outside at free will
We travel a lot in the RV
The past 6 months we’ve moved into my Mothers home to care for her
She lives in a subdivision where there is a lot of traffic, other dogs, a lot more constant stimulation than what they are used to
My 2 dogs are:
Bella 9 year old Boxer mix, spayed, well trained to advanced obedience, CGC,
acquired through a rescue at 3 months old
Penny 2 year old, Am Staff, unaltered,, basic obedience
Acquired from a breeder, father was B.O.B. At Westminster
New problem: if they bark at the door the younger one is aggressive towards the older one. I actually like that they bark at the door, we don’t have many guests, if so I can put the dogs in another room or they will go to their crates if asked
But the initial aggression is too much I think and is misdirected energy
How should I proceed?
Leerburg's Answer:
Based on your description here, I'd agree that this is a case of misdirected energy. I assume that this behavior wasn't a problem before you moved in with your mom to help take care of her. With all the new stimulation in the neighborhood, I'd be a bit more aware of a domino effect known as trigger stacking, which might be contributing to the aggression.
Trigger stacking in dogs is the accumulation of stress from multiple, often minor, fearful or exciting events occurring in quick succession. When cortisol levels rise, small triggers stack up, causing a normally manageable situation to exceed the dog’s "threshold," leading to sudden, intense reactions like barking, lunging, or biting.
Since the young Am Staff seems to be the one getting aggressive, for the time being I would work on adding a muzzle for management purposes. I'd probably recommend a JAFCO style muzzle. In the clear vinyl they are softer and more flexible to prevent bites without worrying about the dog learning to "punch" with a wire basket muzzle.
In the long term I'd consider some things to help the Am Staff decompress and relax, and possibly a sport or hobby they can get into to give them an outlet for any extra accumulated energy and frustration. Scentwork is a great at home hobby for young dogs who need to work their mind as much as their body.
If you need help picking out a muzzle size for your dog, let me know. I will need to know your dog's snout length, a closed-mouth snout circumference, and cheek width to help you pick the right size for your dog.
Trigger stacking in dogs is the accumulation of stress from multiple, often minor, fearful or exciting events occurring in quick succession. When cortisol levels rise, small triggers stack up, causing a normally manageable situation to exceed the dog’s "threshold," leading to sudden, intense reactions like barking, lunging, or biting.
Since the young Am Staff seems to be the one getting aggressive, for the time being I would work on adding a muzzle for management purposes. I'd probably recommend a JAFCO style muzzle. In the clear vinyl they are softer and more flexible to prevent bites without worrying about the dog learning to "punch" with a wire basket muzzle.
In the long term I'd consider some things to help the Am Staff decompress and relax, and possibly a sport or hobby they can get into to give them an outlet for any extra accumulated energy and frustration. Scentwork is a great at home hobby for young dogs who need to work their mind as much as their body.
If you need help picking out a muzzle size for your dog, let me know. I will need to know your dog's snout length, a closed-mouth snout circumference, and cheek width to help you pick the right size for your dog.
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