My new rescue dog bit a friend. Is it fear aggression? What now?

I'm sorry to hear that this happened! How upsetting for you and your cousin. The situation you describe - a child coming up behind a dog and startling it, particularly when food is involved - is an extremely common trigger for bites. Any dog will bite if it feels scared or threatened. Our responsibility as adults is to make sure that these situations don't happen. For safety reasons, I would recommend keeping Max separated from any visiting children from now on to prevent this from happening again. Also, in the future, please don't hit him or scold him for reacting this way - the aggressive behavior was prompted by fear, so punishment will only make him more tense and defensive around kids in the future. This is likely why he growled at your friend once he was back in the house - he was stressed and upset, and already "on-edge" from everything that had happened before. If you want to try and work on this issue through training, I would strongly recommend getting help from a veterinary behaviorist who can evaluate Max in person and help you put together a detailed plan for him. Training for aggression issues is generally focused on teaching the dog to associate good things with whatever he is currently afraid of (such as children, visitors, etc.), and should not involve punishment of any kind. Management is also extremely important to ensure that everyone stays safe, for dogs with any history of biting. You can search for a board-certified veterinary behaviorist in your area here: www.dacvb.org

If this is a sudden or new behavior that happened out of the blue, and Toby is now biting and snapping when picked up or handled, I would be concerned that there is something going on such as pain or illness. Often times, a sudden behavioral change can indicate pain or another underlying condition. A good first step is to schedule an appointment with your vet to rule out any health issues that could be causing this. If Toby checks out healthy and he is still acting aggressive and trying to bite you or other animals, I would seek out the help of a trainer or veterinary behaviorist in person. Aggression is a very serious and complex issue and having someone there in person that can observe, assist and provide a tailored plan to help change Toby's behavior is best. Veterinary behaviorists are great as they are able to prescribe any needed medication in addition to a training routine to help create a safer, stress-free environment. You can visit this site to learn more about veterinary behaviorists and find one in your area: http://www.dacvb.org/about/member-directory/

It may go either way but I would doubt she has an aggressive nature or the start of your companionship would have not been so well. It may have been too many changes too quickly without letting her adapt. A new environment, people and another pet was overwhelming. It is best to keep her quiet and away until she starts to trust you again and not act aggressive. Once that happens, slowly introduce her to new people and let her explore the environment then let her be around the other pet. She will be scared and stress to start so go slow and be patient.

Hi there! I'm sorry to hear that you're having this problem with Buffy. It's not unusual for behavioral issues to take a few weeks to show up in a newly adopted dog - there is often a "honeymoon period" while they're still getting comfortable and adjusting to their new home, before these issues start to emerge. Aggression towards other dogs and humans is a complex behavioral issue that's difficult to address properly in a forum like this, but I can try to give you some general information that may be helpful. Treatment for aggression issues is generally based on identifying what situations tend to trigger the aggressive behavior - then either finding ways to avoid them, or working with the dog to teach her to respond differently using reward-based training techniques. If this is something you want to work on, I would recommend making an appointment with a veterinary behaviorist who can evaluate Buffy in person and help you put together a detailed treatment plan to address her aggressive behavior. For now, if the aggression only happens with dogs and people she doesn't know, I would recommend keeping her separated from visitors for now until you are able to get a more detailed plan in place to work on the problem. You can search for a board-certified veterinary behaviorist in your area here: www.dacvb.org

Aggression and fear are complicated. Some dogs can make some progress with appropriate guidance and consistency. For such guidance you will need to work with a trainer or a behaviorist. They must show you how to read his body language and how to respond in a fashion to modify their behavior. Certainly you can read many books about training and canine behavior as it is all helpful but likely you will still need professional assistance. Best of luck and please feel free to post any additional questions.

Oh no, that's not good that Ziggy bit your friend's dog. I would immediately get him into a professional behavioral expert, which can be recommended by your vet. I never recommend that owners work with their dog's on their aggressive behavior due to safely issues. It's best left to the professionals. The behavioral expert can help identify what triggered your dog to be aggressive, and work with him on preventing it from occurring again. I would keep Ziggy separated from your friend's dog for now to be safe.

Poor thing. My two top would be that he was really sore before and/or after the surgery and remembers that being traumatic. Fear-based aggression is very common in dogs. Your comment that he seems worse than before the surgery makes me think perhaps he never loved having his feet touched, and if that's the cause, having an injury could have caused him to think "see, I was right! awful things happen when people touch my feet!" even though I'm assuming the injury itself was unrelated to a person. Since he's gotten to the point of biting, I would recommend talking with his vet about some medications (such a prozac and/or trazodone and gabapentin) to help him calm and then working with a very qualified trainer on desensitizing him to having people touch him. I would also recommend never letting kids interact with him until he's more comfortable, so that no one is in danger. Good luck with this very difficult problem.