A. My experience is that the incisors, while used for biting, are less of a threat than the canine teeth. Regardless, these teeth have extensive pulp cavities and downsizing the crowns would likely result in nerve damage and chronic pain.
If you have tried behavioral modification and you are still concerned for the safety of the other animals in your household then I think you have to consider finding another home for your dog, unfortunately. A dog that will bite/attack other animals is at risk for biting people as well.
A. Personally I wouldn't recommend this. Reducing the size of the teeth is not a guarantee that she could still not injure them if something were to happen. Your dog is also an older pet and surgery at this age is not highly recommend as there are dangers with anesthesia. Training is what you need with careful supervision to help the pets get along with each other
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