Your Questions About Best Dog Collars For Training

Thomas asks…My best friends dog is really aggressive?My best friend realises him at night. He's kind of a guard dog but he is too aggressive. Whenever I go to her house he's tied to his chain and barks like crazy. His ears got kind of back, his eyes get focused on me and the hair at the back of his neck raises which scares me a little but I don't show any fear. I'm scared because one day, while she's feeding him and I'm there, he might get off his chain or she might lose grip of his chain and

dog protection training