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My dogs fought after I brought a new dog home. How to introduce?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | neutered | 2 years and 9 months old | 35 lbs

I have had a pitbull(name is Tank) for 2 years. I came home with a new dog, great dane(name is Rajah) last night. From what i have seen between the interactions these 2 have had, Tank is acting very territorial and will not let Rajah explore her new house. They have fought twice already but i split them up instantly, fearing this would happen, i was somewhat prepared for them to not get along. At the moment, Tank is in a kennel so, hopefully, he realizes this Rajah's home now too. What's Next?

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on January 4th, 2020

Keep them completely separate, then begin again introducing them gradually. Start by having a closed door between them. Allow them to hear and smell one another but not see each other. Do this for gradually increasing periods of time. The next step would be to allow them to see one another from a distance. You can slowly decrease the distance while increasing the time. Move on to having them in the same room, but with one in a closed kennel. Eventually, you can try a physical introduction. Keep them both on leashes (and muzzled if necessary) for safety. Correct any negative behaviors immediately and praise/reward both as they progress. A pheromone product, such as the Adaptil collar or DAP plug in diffuser, may help to decrease any anxiety or aggression. Be sure to provide extra toys, bowls and beds to prevent resource protection.

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