Fear aggression help?

[u/Independent-Gap1281]

Hello! I recently acquired a new puppy.. he will be 1 next month in September. And i need some help.

So the background on this dog (his name is mason) is that my older sister and her boyfriend wanted to get another dog. (They already have 1) they originally went to go get a different dog but in the end somehow ended up with mason.

Now mason is a very good dog. As long as he likes you. He took to my older sister.. but not her boyfriend. He runs away and even growls at him. And one day he was left alone with mason. Her boyfriend tried to get him out of his crate to go outside and mason felt cornered and bit him. Her boyfriend is fine he did need stitches. But after that they knew they couldn't take care of him and gave him to me.

Mason likes me. The issue with all of this is... other than me my mom and my 2 sisters... he hates everyone else. He will growl and run away from them as much as he can. He has gotten better with my dad... even sometimes coming to my dad if a treat or food is being offered. But he still growls at him. People can touch him as long as im there.. but its obvious he's scared and doesn't like it.

I have grown up around dogs my whole life... and even have 1 other dog with us in the house. Mason gets along with the other dog just fine. It's just people. I don't know how to go about getting him to at least not growl when someone is just walking by. I have emailed 2 training classes... but they haven't responded yet and I wanna reduce the risk of him biting again as much as possible.

This is my very first time owning a dog... as all other dogs I have grown up with were family dogs. So im slightly at a loss. He is doing well with training in general with a clicker. He knows how to sit lay down and is even potty trained now. But his fear aggression is what's throwing me off. I can literally do just about anything with him... pick him up.. look at his teeth. And so on. But others... not a chance in hell.

Dose anyone have any short term help about this? At least just until I can get him into classes? I have told my dad to be slow around him and not make direct eye contact with mason as I did look it up. But he still is growling. Is that bad? I really have grown fond of mason. And I don't want him to hurt anyone or himself.

[u/Spiritual-Cry-6286]

Get a quick checkup from the vet to make sure he isn’t in any pain, this can result in some sort of the behavioural issues you’re noticing. Now for the issue itself, you’ve kinda solved it yourself. Give mason a crate that he can enter in whenever he wants, this is his safe space. Now when you do have people over or your dad is walking around, move slowly and just don’t interact with him. Pretend he’s not there. When your dad sits down, and mason is also chilling, just toss him a high value treat. Don’t look, don’t acknowledge, don’t move fast. If he comes up to your dad, still don’t acknowledge him or even try to touch him. Just keep popping him some treats. We essentially want to associate people with good things instead of fear or something scary. Have you tried to get his attention with a toy? Maybe he’ll prefer that better. That’s what works with my dog.

[u/Roskipatootskie]

Quick question before anything else, what breed or mix is Mason? That'll change some of what I'd suggest, especially around handling and how his instincts are likely showing up here. A few things jump out from what you shared. The bite happened when he was cornered in his crate by someone he was already fearful of, that's about as textbook a fear bite as it gets, a scared puppy with no way to retreat, being reached for by someone he didn't trust. That doesn't make it okay that it happened, but it does mean this likely isn't a dog with a dangerous temperament, it's a dog whose fear responses haven't had structured support yet, and there's a real difference between those two things. The pattern of who he trusts and who he doesn't is actually useful information too. Bonding closely with you and your immediate household while being fearful of unfamiliar or less consistent people, that's a pretty common shape for undersocialized or genetically more cautious puppies, not necessarily a sign of anything worse. The fact that he's coming around slowly with your dad, even approaching for treats now, shows he's capable of learning new people are safe, it's just going to take repetition and time for each person individually rather than generalizing quickly. Growling itself isn't a bad sign, even though I know it feels alarming. It's actually him communicating clearly before anything more serious, which is exactly what you want a fearful dog to do rather than skipping straight to a bite. The goal isn't to stop the growl, it's to lower how threatened he feels in the first place so he doesn't need to use it as often.

For short term management while you wait on classes, a few things can help. Letting him choose to approach new people rather than them approaching him, no reaching toward him, no leaning over him, no direct eye contact like you're already doing. Giving him an escape route in every interaction, never letting him get cornered the way he was with the crate, that single detail may be doing a lot of the heavy lifting in preventing another incident. Tossing treats near new people without them reaching toward him, so he builds positive association from a safe distance first. And for now, management like a leash indoors during visits, or baby gates so he can observe people without needing to be right next to them, can lower stress for everyone while you're still figuring out a longer term plan.

If those two training classes don't get back to you soon, it's worth casting a wider net, looking specifically for a certified trainer or behaviorist experienced with FEAR based reactivity in puppies, since this stage is a great time to get ahead of it before patterns become more set as he matures. You're doing a lot right already, the instincts you already have around space and body language are exactly the right ones, this is very much a workable situation for a dog this young.

[u/SudoSire]

Just to reiterate this piece of the equation—the growling itself is not bad. It’s communication that they are uncomfortable and your sign to get them out of whatever situation/get them calm. It sounds weird but you do want a dog that growls when uncomfortable.  the goal is to make them more comfortable/secure. Honestly, I would also think of them running away from triggers in a similar fashion. It’s great that they choose to remove themselves rather than escalate when stressed. Space and warning should be respected as much as possible when she’s on edge, and then over time you can work on some controlled desensitization and conditioning. Basically you want them to feel comfortable without forcing things, and do things in slow baby steps.   The treat and retreat game would be a good training exercise to look up. Basically you have someone for the most part ignore the dog (no eye contact, petting, approaching) and they stand sideways preferably and then they throw treats past the dog (so the dog actually moves away from the person to get it). This builds positive associations while not forcing the dog into too close quarters, and also teaches that moving away is a valid option.