Thu, Nov 17, 2005, 7:47pm (EST+5) snipped-for-privacy@spamcop.net (Dave=A0Hinz) pretty well covered it: it's never ethically wrong to value your kids over a threatening dog.
I'd keep an eye on my kids while they were outside. I'd also say a shotgun, about #4 buckshot, no rifle - better chance of a hit, and less carryiing range, and penetration. No single shot, you may need an immediate second shot.
If the guy's curious about the "legality" of it all, he needs to ask locally, and ask somone who would actually be qualified to give a pertinent answer. I live in NC, and have no idea how "legal" it'd be. Might be a good idea to tell some authority he's worried, just to have it on record, if he ever does have to take action. That's called PYA.
Me, a dog came in my yard growling at my kid(s), I'd be out there with a loaded shotgun, holler at it to git, if it kept moving, it'd stop moving. That's the point I'd be sure to contact the local law. Might also be tempted to sue the dog owner.
But, that's just me. I'm a people person.
JOAT Just pretend I'm not here. That's what I'm doing.