Buckeye has.. my husband was giving my grandson a kiss and buckeye was on his lap and that was the one and only time Buckeye has snapped at anyone. He didn't hurt him at all.
my husband will pretend to smack my arm and buckeye will come over to me and hug me. but nothing like the nip episode.
He probably is just protecting your daughter. did she reach down and pet him? maybe that will help to let him know that your neighbor is not there to harm.
of course, let this be known that i (for sure) am not the person to answer behavior problems. my 2 run my life.
I am curious to see what someone else says about it.