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Help! My puppy is fighting and biting my senior dog. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 45 lbs

My 6 month old puppy (brown dog) has started brutal fights with my 13 year old dog (multicolor). She is grown bigger then my 13 year old dog and gets the higher advantage and bites her neck. She has never drawn blood but yesterday she hurt her neck so much that she couldnt lay her head down for a decent 2 hours. We know my older dog is a rat terrier mix and we have no idea what ths puppy is. We want to stop this but we dont know how. Please help.

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1 Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on October 22nd, 2019

That sounds like a tough situation and I hate to hear this is happening. Most humans cannot correctly read canine body language without additional training. Unless you know what the dogs are saying to each other, it's impossible to know how to modify and train the dogs behavior. Canine aggression is a complex behavior as it can stem from dominance, possessiveness, fear, anxiety, resource guarding or a combination. I recommend to work with a professional trainer. This will give you the best and fastest results. Researching on your own will also be helpful. Familiarizing yourself with canine body language and dog training can help you to recognize what your pet is trying to say. You can find many books written on the topic and there is a trainer named Victoria Stilwell who I think is particularly helpful. Best of luck.

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