Adopting an older Rottweiler: Will he be aggressive after owner change?

Rottweilers, as a breed, can be very good pets - some are aggressive, but many are friendly and easy-going. I'm not sure if there was something about your puppy in particular that may have concerned your vet, such as signs of aggression or extreme fearfulness during the visit - if so, early referral to a veterinary behavior specialist would be the best option to determine if there is a problem and start working on it early in life. If the puppy is acting normal (friendly and curious, not overly anxious or aggressive towards anyone), there is no particular reason at this stage to think that he won't be a good pet when he's older.

No it should be fine. I would just make sure you get him all of his vaccines and make sure he is socialized and trained properly. It is best to socialize them with other people and dogs when they are young, but you don't want to take the to a public park where you don't know the vaccine history of the other dogs. It is best to take them to a friend's house that has a healthy, fully vaccinated dog to help with socialization. I hope this helps!

Unfortunately, it's relatively common for behavior issues like this to develop between 1 and 2 years of age - this is the period when dogs reach social maturity. Often, they may have been fearful or nervous about many things when they were puppies, but don't start to act out aggressively until they are a bit older. Aggressive behavior in a large dog like this can be a serious problem, and is best treated by a professional who can work with you and Molly in person. I would recommend making an appointment with a veterinary behaviorist who can evaluate her and put together a treatment plan to work on the problem. You can search for a board-certified veterinary behaviorist here: www.dacvb.org In the meantime, I would recommend keeping her away from people and dogs as much as possible for safety reasons, and to avoid making the problem worse. Treatment for this problem is generally based on teaching the dog to associate good things (such as treats) with seeing people or other dogs, starting at a distance where they are comfortable and gradually working close from there. The behaviorist can help you with this, since it can be hard to do on your own! Punishment of any kind for this behavior (including verbal scolding, leash corrections, shock collar corrections, etc.) is not recommended, as it tends to make the dog more fearful and has a high risk of worsening the aggression over time.

Rottweilers are problematic dogs, especially for people who do not have experience with those type of dogs, they can be aggressive and could be deadly if it attacks you or your children. i would not recommend it.

This is a Rottweiler, a breed that needs an experienced owner as it is a very powerful dog. You should familiarise yourself with this dog before you agree to take it, as in order to be safe he needs to be well trained and have a nice disposition. This is not a dog for a beginner dog owner.

I would make an appointment for Sam I Am with a professional behavioral expert. I never recommend owners deal with aggressive issues on their own due to safety reasons. Speak to her vet about a referral to one. I'd also have her spayed, as hormones can contribute to behavioral issues. I hope this helps.

I strongly recommend that you have your dog examined by a vet since she is considered an old dog and very heavy and therefore could be suffering from painful arthritis which in turn may make her aggressive. If pain is the culprit, then NSAIDs given regularly will help control that pain and the aggression may stop. I would be worried that she will hurt your other pets and ultimately the humans in the house (not just your brother). Best keep her separated from the cats until you take her to the vet.