this! i adopted "joker" from a boxer rescue a few days ago, thought i would post a pic as i had never heard off or seen a boxer/mastiff mix before and i thought it yielded an interesting dog. to me he looks sort of like a real big pit- bull.
he is gentle and friendly to humans, but does not get along well with other dogs, and anything small and furry is lunch(strong prey-drive).
he is 90lbs of SOLID muscle. when playing tug of war, his strength is very impressive, and i do not impress easily, as a former owner of a 170lb Irish wolfhound and 120lb rottweiler/bulldog mix.
i know, kind of cheesy to post pics of dogs, but i could not help it.