Re: Bullmastiff and a Boxer living together?
Well my two get on wonderfully, with no problems to date.
But I suppose bringing in an older 4 year old Bully with a younger boxer will be a case of just try it and see how they get along.
If the breeder will let you have a trial period, then that could be useful.
Best of luck with whatever you decide, Bully's and Boxers are both great dogs.