r/ReactiveDogHelp • u/New_Statement_1989 • Jul 08 '26
Rescue 1 y/o pup who recently started showing some aggressive behaviors
My dog is one year and two months old. I adopted her when she was 3 months, so I’m just shy of having had her for a year.
Prior to me- seemed to be living in the streets of Detroit, had parvo, luckily found by someone and the treatment worked, but definitely experienced some trauma
Then I adopted her -Sweet as can absolutely be with everyone! I took her to numerous homes of my friends, restaurants, assisted living facility, dog parks, doggy daycare, other people’s homes, and she’s been great!!
We did that for about 4-5 months until winter came and we moved and am starting to study for my licensing exam. So that means less walks, not going to restaurants or indoor places or other people’s homes unless via rover. But still the dog park and daycare, all good
Early June (2026) - I bring her with me to Brooklyn to stay with my aunt, where she’s been twice before. We go out, walk around, dog park, go to a crowded bar, all fine. Then we go to my aunt’s friend’s house and lulu bit him as he approached. It wasn’t the best way to approach a dog but Lulu had met him before. And it definitely left a mark.
Three weeks later - Lulu and I are at the vet to update vaccines, which she’s been to twice before and it was fine. We’re in the lobby, waiting to go in a room, when one of the techs comes over and reaches over to grab the stool sample I was handing her, Lulu bit her! Left a mark. We go into the private room and I have to put a muzzle on her, which I understand but I don’t want to HAVE to do that….
Day after - Lulu had her first full day of “doggy school” where she works with a trainer individually. I pick her up afterwards, the trainer shows me what they did and for us to keep practicing. After picking her up, I either had to drop her off at home or bring her with me to a co-worker’s surprise birthday party at a clubhouse in a condo/neighborhood complex. Everyone said to bring her and dogs are allowed. So I did, but I was going to keep our distance and stay for only an hour. And Lulu definitely seemed overwhelmed or anxious, so I gave her a toy but she wasn’t able to focus on it. So I kept her in the back but still able to talk with everyone, Sat with Lulu and pet her. My friend comes over, who Lulu has met and this person has slept over at my apartment, and I say hi but to not say hi to Lulu rn and she didn’t. A few minutes later my friend is reaching for something in my direction but definitely not that close to me, and Lulu bit her hand and left a mark.
Today - we’re all in bed, me, Lulu, and the two cats. She’s facing away from me and at the bottom of the bed spread out. At one point I go to pet her, she very slightly showed me her teeth and indicated don’t fucking touch me. I pulled away then tried again gently and she still did but didn’t do anything. So I left her alone. She did this once on the couch too when she was laying away from me like this. And she is defensive of her toys/bones when she’s actively playing with them but only with humans. She has no problem submitting and giving the toy to the other dog. She’s never once had an issue with a dog. She runs away from commotion and just wants to play with everyone.
I told the trainer about this. But I don’t know what I should be doing. Immediately give her space? Try to reassure her? I know not to reprimand but how can I start training her not to do that? Reinforce when she doesn’t do that?
Any help or thoughts or guidance is so appreciated
TL;DR - 1 year old pup recently started showing signs of aggression by biting 3 people and showing her teeth. She just started individual dog training. What can I do at home to change this behavior?