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Why is my 6-month-old puppy aggressive and biting guests/family?

Updated On September 23rd, 2025

Pet's info: Dog | English Cocker Spaniel | Male | neutered | 6 months and 17 days old | 15.42 lbs

Prince is 6 months puppy but very aggressive n possessive dog. He doesn't like any guests in house he directly goes to bite them .we have to keep him in room up till guests goes. When he is sitting with Mommy he doesn't allow anyone nearby him n mommy he attacks aggressively. Yesterday he was so aggressive when my daughter come nearby he went to bite her n I tried to keep him away he bit me (mommy)badly again morning he was not allowing daddy nearby ....he again bit me on shoulder.

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3 Answers

Most Helpful Answer

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Answered By Susan England-Foster

Veterinarian

Published on September 6th, 2018

I am sorry you all are going through this with such a young dog. I am not sure what is available to you in India but in the united states I would recommend taking Prince to a vet to make sure he does not have any underlying health issues that might be coming out as aggression. Than I would recommend getting him in advanced aggression training. This would involve working with a dog trainer who specializes in aggression. The fear is with such a young dog if left unaddressed it could get worse. I would try and start working with him in other areas and try to keep him from sitting close to certain people that trigger his aggression. Hope this helps

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    Answered By Jessica Desrosiers

    Veterinary Technician

    Published on June 19th, 2018

    Aggression towards other pets and people is a very complex and serious issue, and if it is to the point he is constantly attacking you or your other dog, or won't allow himself to be touched or handled, I would highly recommend seeking out the advice of a certified veterinary behaviorist in your area, especially if he is already doing this as a four month old puppy. They can visit in person to work out a plan of behavioral therapy and medication therapy to start getting Prince on the right track to help him feel more comfortable in your home, and get you communicating in a way that reduces stress and aggressive behavior. I am not aware of a listing for veterinary behaviorists in India, so talking with Prince's veterinarian is best as they can point you to trainers or behaviorists that are local to you to start helping out.

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on July 26th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! I agree with you that this is unacceptable behavior and it is indicated to try to eliminate these behaviors now as when they get older is harder to do so. I highly recommend you consider a dog trainer who can work with you both in person as that is really needed for these types of behaviors. This can get better but it will require an expert working with you in person and consistency and patience. Good luck and have a great day!

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