He called my dog a nigger.
I didn't hear him.
So he repeated it, bragging.
Somehow I managed not to beat him up. I scolded him in the sharpest voice I've ever used, and told him NEVER to say it in my presence, and hopefully never again. I walked away before I wouldn't be able to control my temper.
I don't mind that he called my dog a bad name. We call him "Little Shit" often, but affectionately.
I will not tolerate my brother using that word in that way.