Has anyone had experience with resource guarding in an adult rescue dog? We've just adopted a 2 year old retriever/Weimaraner mix, wonderful dog, really responsive to training and settling in well.
Last week we gave him a bone for the first time and it triggered some serious guarding behaviou, growling, a bite that broke skin, and a second lunge. We've since had two further snapping incidents with a toy, no damage but contact made both times. All incidents have been triggered by someone reaching towards something he had.
Today he stole a pack of butter while we were out, instructed son (14) to leave it as he snapped at him when he tried offering a distraction/treat. When I walked past the abandoned packet to get to the washing line he woke up and followed me, when I stopped to look at it he started growling and leapt up, bit my hand etc. When I walked back past to go back indoors he did the same again but to the other hand, but kind of followed me. I went in the side door of the house to avoid him, by the time I came in he was back indoors, calm as anything, looking very meek as if he knew he'd done wrong.
We've spoken to the charity we adopted him from and a dog behaviourist, both reassuring but saying they'll help come up with a plan, and in the meantime don't approach him on his bed (he's ok with this now) or when he has something he values, use swap technique rather than taking things directly.
Wondering if anyone has been through similar and how it resolved? Particularly interested in whether the guarding stayed limited to specific high-value triggers or whether it needed significant behavioural work to manage long term. He's otherwise a genuinely lovely, affectionate dog and we want to get this right for him and for us...but he is big and strong so we need to do it properly. In the home he was rescued from he lived with a very bossy older dog, perhaps he was used to having to defend things from her 🤨