Freezing, hard stare or a growl over food or toys means: I am worried you will take this. It is fear of loss.
Mild guarding is common and responds very well to early, calm work. Acting now is exactly right.
This one is safety-critical or emotion-driven. Work with a qualified force-free trainer or a veterinary behaviourist rather than doing it alone. See a veterinarian for any sudden behaviour change or sign of pain, and a qualified behaviourist in person if your dog has bitten, guards with snapping, or panics when left alone. Read our approach.
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