I think this behavior is a little over the top. Your dog dies so you beat up your veterinarian? Really?
I remember when I was in school, we had a dog in our ICU who was hanging on by a thread pretty much during my entire ICU rotation. I don't recall specifically what was wrong with him, just that I had to check his vitals every 15 minutes all night for several nights in a row, and they were never good, and I frequently had to page my resident, which is never fun, and it didn't at the time seem to me that this dog had any real chance of going home.
At some point toward the end of my rotation, this dog started actively trying to die again. This time, for whatever reason, the owner of the dog got mad. Having received yet again a phone call from the supervising veterinarian asking him if he wanted full resuscitation or if we should euthanize or let the dog go, he apparently hung up the phone without answering, and arrived at the building moments later (he must have been on his way in for a visit or something). He stormed past the security desk and headed into the ICU and just started pushing and shoving and yelling and knocking over IV poles and basically clearing a path to the dog - in whose cage I was sitting, because I was bagging him at the time. Luckily the security team was right behind him and they had him out of there pretty fast, because all I could think at the time was how upset my mom was going to be if I was killed by some maniac client before I even graduated.
Anyone else ever find themselves on the wrong side of a client's fists? Officer Cynical, I'm not talking to you here :) (though I'm sure you can share plenty of fun stories) (and you should feel free to do so)