The last time I saw him alive (three weeks ago or so), I was on a different realm (Thrall - US). I had just logged in when a fellow hunter whispered me and told me that Krush was at his northern spawn location and she had him tapped for me. I hastily flew there and I grabbed a temp pet. Consumables and macros at the ready, I began my tame cycle. I had about 1.5 seconds left on my tame when he dropped a fear bomb and my tame failed. No worries, I broke out of it and my friends and I let Krush reset to begin a second tame attempt. He did so and we tagged him again and *just* began a tame attempt on him when a level 80 blood elf death knight flew down and proceeded to kill him while I was taming him. A same faction player... killed him just as I had begun my tame. He didn't even get credit for it, as the loot was for us (I left it on him to rot out of protest).
I was livid. My friends were irate. Needless to say, we had some choice words for this jerk and of course, Blizzard did absolutely nothing to rectify the situation when a ticket was submitted about it (three times). I have since spent innumerable hours circling Sholazar Basin, hoping for another chance to tame him -- especially now that it's supposed to be even easier than it used to be.
This isn't a very fun or healthy way to spend my play time. I obsess over it, but what options are left to us? Blizzard refuses to do anything about it. In fact, I feel as though they actually are encouraging it. The people who grief like this do it and laugh, knowing full well that Blizzard won't lift a finger to help us or to punish them. The responses I got in /general chat on Thrall after this happened were so vile that I've actually transferred servers since.
Anyway, I just needed to vent my frustration to some that will understand and that may have been through this before. Blizzard needs to either put in some sort of protection to keep this from happening, or have a system by which they can award us the pet that we had been trying to tame. I've spent so many hours in that d*mn basin, circling round and around and around and around -- I've put in my time hunting both Krush and Loque. Give. Me. My. Pet.
p.s. - Oh yeah, my first tame attempt on Loque was griefed as well, back in the day. Also by a death knight, but a night elf one. Go figure.
Sofia, the remarkably purple spirit cat as drawn by Ket Shi. 
I've had this happen to me ........................... 6 times or more I think. Regardless of what server I was on and whether or not Blizz will do something about it I still report it. Every GM I've sent a ticket into about these gankings has been polite and said it would be dealt with but of course they couldn't tell me what happened. Yes of course they could have been blowing smoke up my bum but I did feel listened to for the most part. 
