How to stop my dog from guarding my room and biting visitors?

Aggression toward people is a very serious and complicated topic, and one that should be worked with by a local animal behaviorist or trainer in person. It is best to work together to address the root cause behind the biting (fear, uncomfortable in new home, undersocialized, etc) and then work on a training plan together than can ensure both Okami and any visitors remain safe. In the meantime, moving Okami to another room and not having visitors approach, or just tossing a treat if they walk past where he is is best to avoid direct contact and anyone getting hurt. In the US, this site is useful for finding a certified behaviorist near you that can get you started on resolving the issue: http://www.dacvb.org/about/member-directory/

While you may think he "knows he shouldn't do it" that doesn't mean he actually does, or isn't still wanting to do it. It could be that the maid coming by is extremely stressful for him, or he has fear associated with it- especially if you scold him every time. In his mind, he may think maid comes over = I get yelled at, so he tries to shoo away the maid in the hopes he won't be yelled at or scolded. Speaking with a trainer or behaviorist about BAT (Behavioral Adjustment Training) is a good idea. This can help nervous or fearful dogs desensitize to certain stimulus through positive, gradual introductions, rather than forcing him into a fearful situation. Moving him to another room or outside until you can work with a trainer can also help and can keep your maid safe from being bitten if he's actively trying to bite her. Trying to make her coming by a positive experience instead of a fearful one may also help. When she comes by, have her toss him a treat and then ignore him, or give him a special Kong or toy filled with his favorite snacks, so that he begins to associate maid coming over = fun! instead. As aggression is a very complicated issue, I highly recommend working with a trainer or behaviorist in person so that they can observe and work with you to positively change Brownie's behavior. In the US you can find a list of nearby behaviorists here: http://www.dacvb.org/about/member-directory/

Hi there! I'm sorry to hear that you're having this problem with Hanna. Most aggression towards strangers in the situations you describe are a result of fear and anxiety - Hanna may not be comfortable around people she doesn't know, and barks and growls to try and get them to go away. Treatment for this problem is based on teaching her to associate good things (usually treats) with seeing new people, along with making sure that she always has plenty of space and is never forced to interact if she doesn't want to. A basket muzzle can certainly be used to help keep everyone safe, if needed, but it shouldn't be used to put her in uncomfortable situations. Aggression issues in dogs are complex and can be difficult to work on safely without help, so I would strongly recommend getting in touch with a veterinary behaviorist who can work with you in person. He/she can evaluate Hanna to help determine what is causing her aggressive behavior, and will help you put together a detailed training plan to work on the problem. You can search for a board-certified veterinary behaviorist in your area here: www.dacvb.org

Your best option is to have a professional trainer come to your home and evaluate her during these situations. They will be able to give you the best advice. Behavior issues are not quick fixes and if you don't know what you are doing you could make the dog worse instead of better. These types of behaviors should be handled by a professional. I don't know where you are located so just do a google search for in-home professional dog trainers (like Bark Busters or Sit Means Sit) or you can probably get a reference from your veterinarian. ( https://sitmeanssit.com/ )

Hi. This is definitely concerning and I'm sure it is hard to see and deal with. It's good that you know him well and protect others. With this severity, I recommend googling for a veterinary behaviorist in your area. This is a veterinarian that specializes in behavior. They would be the best to give you advice.

Poor Bear! Excessive barking and howling when left alone is a very common sign of separation anxiety in dogs. Barking and growling at visitors and strangers on walks is also a very concerning behavior, especially in such a young dog. These are complicated problems that are difficult to address adequately in a forum like this, so I would strongly recommend making an appointment with someone who can help you in person. Ideally, it would be best to see a veterinary behaviorist who can evaluate Bear and help you put together a detailed training plan to work on these problems. This may include prescription anti-anxiety medication, since it sounds like his issues are fairly severe. You can ask your veterinarian to refer you to your nearest board-certified behaviorist for an evaluation and treatment plan.

Aggression toward people is a very complex and serious issue so I highly recommend speaking with a veterinary behaviorists near you. A veterinary behaviorist is a vet that specializes in behavior and they are able to work with you on both a training plan, as well as prescribe medications to help with stress or anxiety during training. Most behaviorists can utilize a program such as BAT (Behavioral Adjustment Training) that helps to desensitize your dog to triggers (such as men or the mailman), accept touch or calm handling, and help reduce overall stress and anxiety. They also work with you in person which can help ensure all training is done in a safe manner for both you and your dog. You can learn more about them here: https://www.dacvb.org/page/about