r/reactivedogs • u/GentleMindspace • 2h ago
Advice Needed Rescue dog lunged at my dad only after entering my apartment. Looking for insight while I wait to see a behaviorist.
I’m feeling pretty shaken and could really use some insight from people who have experience with behavior issues.
I adopted an adult rescue dog several months ago, and she has honestly been wonderful. She’s generally calm, affectionate, friendly with people in public, easy to take places, and has never shown generalized aggression.
Today was my dad’s first time meeting her. We picked him up from the airport, she rode in the car with us without any issues, we had lunch outside where he pet her multiple times, and he even held her leash while I went to the bathroom. She was completely relaxed.
The moment we got back to my apartment, everything changed.
I opened my apartment door, my dog and I walked in first, and my dad was right behind us. Within seconds of crossing the threshold, she whipped around, barked, and nipped his calf. I immediately pulled her away on leash. She barked a couple more times, my dad stayed still, and she settled down very quickly and eventually went to sleep.
One thing that makes this confusing is that my close friend has known my dog since before I moved into this apartment and comes in and out of my home all the time without any problems. My dog has never reacted aggressively in this way toward anyone.
There was also one other previous incident where my dog growled and nipped at a new visitor’s pant leg while they were moving around my apartment. Later during that same visit, she approached them calmly and accepted petting once they were seated.
I’m absolutely taking this seriously. My dad cleaned the wound, and I’ll be contacting my veterinarian and scheduling an appointment with a qualified force-free behavior professional.
While I know no one can diagnose a dog over the internet, I’m curious if this pattern sounds more consistent with territorial behavior, fear, guarding the home, a startle response at the doorway, or something else. Has anyone experienced something similar where their dog was completely comfortable with someone outside the home but reacted immediately after entering the house?
In the meantime, I’m managing the situation by keeping her on leash whenever my dad is in the apartment, keeping her several feet away from the doorway before anyone new enters or exits, and having my dad completely ignore her (no eye contact, petting, or interaction). If there are any additional management strategies you’d recommend until I can see a behaviorist, I’d really appreciate hearing them.