Can my aggressive German Shepherd accept a new puppy safely?

I'm so glad you and Bruno have a strong bond! I don't think it's a definite that he and another dog will fight when the puppy grows up. However, I would recommend that you introduce them carefully and slowly, and always monitor their interactions until you are certain that Bruno isn't going to play too rough with the puppy. In addition, I would consider having Bruno neutered, as testosterone increases aggressive tendencies and can certainly contribute to dog-on-dog aggression in some cases.

Thanks for using Petco Pet Education Center, formerly Petcoach! This is certainly possible and recommended but this usually requires in person training by a qualified dog trainer. I recommend you consider contacting a qualified dog trainer to work with you in person. Good luck and have a good day!

Most dogs do well with a companion in the home. It will take some initial training on your part to get Bruno and a new puppy used to each other. I would recommend not leaving the new pup alone with the older dog until they are used to each other. It is also important to make sure the older dog still gets plenty of attention and exercise when the new puppy comes along. Good luck!

This is a great question! Adding a new dog into a household will certainly change the dynamic of things. I would be hesitant bringing any large breed adult dog into a house with a small breed dog without having the dogs meet first. However, since you are considering adopting a puppy, I would have no major hesitation. Each individual dog has a different temperament and reacts to animals, people, and lifestyle changes differently. There is never a guarantee that any housemate dogs will get along as time goes on. Since the puppy would only be able to remember his life with Wilfred, unprovoked attacks seem unlikely. If you go forward with bringing a puppy into your house, make sure Wilfred's lifestyle is relatively uninterrupted. Make sure he has a safe, comfortable space away from the puppy. Be sure to feed them separately - even in a separate room if one is possessive of food. Continue showing Wilfred plenty of love and make sure he has alone time with you.

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach. I am sorry to hear that this has happened. This behavior is certainly concerning as you don't want Boston to cause serious harm to your wife or anyone else for that matter. I would recommend taking Boston to a behaviorist for training and other recommendations. There are trainers that will take Boston for several weeks for the training or trainers that will come to your house for in home training. At 4 months of age, this is easier to correct than when he is 4 years old. Now is the time to take action as it is much easier to train a puppy. I hope this helps and for now, please take the necessary precautions and keep Boston away from anyone until he is appropriately trained.

They should be fine together, of course it is highly recommended to have them both neutered to avoid any aggressive tendencies, you should also introduce the puppy under your supervision only for a long time until you are sure your dog can be trusted.

Hello, German Shepherds are commonly aggressive and may require intense training and socialization to be good companion animals. It sounds like he has become quite a dangerous animal, especially to your mother. Please take his aggression seriously and do not allow small children or animals to be around him, as he has a history of severely hurting people. He also needs to maintain his rabies vaccinations to ensure he is not able to spread a fatal disease with his bites. I would recommend seeing a veterinary behaviorist, a good dog trainer, as well as pursuing neutering him. This will be the best way to try to make him a safe animal to live with. I hope this is helpful. Thanks for using Petco Pet Education Center, formerly Petcoach.