Owners aren't entirely blameless.
About 10 years ago at the local free rabies clinic, an Hispanic had one that lunged at every dog that got too close. The a**hole owner shrugged off it's behavior until it drew blood on my lab's ear. I had a nearby sheriff's deputy remove them from the premises pronto.
Since that incident, I take my dog to the vet's office and pay for his shots.


"No good deed shall go unpunished!"