12/02/2025
Something I've noticed is how consistently clients are surprised when their dogs are fearful, defensive, even aggressive when people who are unknown/strangers to the dog enter their yard or home.
Think about it from the dog's perspective, they don't know why this person is there. You can't explain it to them ahead of time. How would you feel if someone totally unfamiliar to you suddenly just let themselves into your house? How would you respond to this?
Guardian breeds like mastiffs, pyrenees, rottweilers, and others were specifically bred to be wary of strangers entering their territory. Our modern version of these dogs may or may not be specifically bred for this anymore, but some breeds struggle more than others.
Learn who your dog is as an individual and give them whatever support they need. Teach them that people entering the home predicts good things for the dog (yummy food usually does the trick). Put the dog away with a fun chew where they don't have to deal with the invader. I'm convinced many dogs are grateful not to have to deal with the stress.
Here are some great resources to help you learn about normal dog behavior and how dogs communicate:
http://www.ispeakdog.org/dog-behaviors.html
https://iaabcfoundation.org/courses/canine-body-language/
Reach out to a professional if your dog is struggling, before there's a more serious problem.
Pictured is my mastiff mix. He's made a career of patrolling the yard and sitting in this window barking at passers-by while the other dogs, who are totally different breeds, sleep and couldn't care less. He's good at his job and I am grateful, but it's important to acknowledge that this behavior can become unhealthy and to help the dog understand that guests are not a threat. We're currently working on not getting so worried every time the (very nice) mail carrier stops by the house.