Oh yeah, Krysalyss, you'd definitely would need a shot for a dog bite!! DH should've got one earlier too, for sure. But I think "most" people can avoid tetanus cause most wounds aren't that serious. And "most" people can tolerate the injection/vaccine, so why risk something even if it's a small risk.
It's kinda like Hep B injections for newborns - they are a bit OTT IMO, as most newborns aren't IV injectors, don't eat oysters, play with poo other than their own, etc.
How OT am I today LOL!
Anyways, I think "puncture" type wonds are the ones to really watch, as mentioned. Your run-of-the-mill scratches shouldn't be a problem.