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My well-behaved 1-year-old dog suddenly started biting. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 1 year and 5 months old | 57 lbs

My 1 year old dog is usually well behaved but has started biting out of nowhere. What do I do

1 Answer

Most Helpful Answer

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Answered By Jenny, DVM

Veterinarian

Published on November 11th, 2017

This may be a dominance issue as he is growing up and passing through puberty. The best thing you can do is have him neutered immediately to help minimize the dominance behavior. From there you need to reinforce you are in charge and that behavior is unacceptable. make sure you correct him every time this happens and give him appropriate items to play with and chew on. Make sure he is getting plenty of exercise also. If all of these fail they do have medication that can with behavior training from your vet

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