Onyxia mount dropped after a few runs, passed it because druids are BiS
After my 2nd run, was really happy about that and only recently stopped using that mount.
I've ran Kael'thas with 4 different guys. This one was the 3rd person and the first mount I've seen. Total Kael kills at this point were like 80. I passed it though. Saw another one later on, on my first run with the 4th guy. Needless to say he was quite excited as I still didn't want to mount.
I do not have screenshots since I formatted PC however, I can share this pretty funny story where I did DS with a group for 3 times each week and for each time the mount dropped from DW yet I lost the roll 3 times in a row . Oh and experiment 12-B also dropped and lost. I do have other mounts such as I got my green proto either on my 6th or 8th egg and blue proto on 5th or 6th run also but I farmed TK for 16 weeks in a row before I quit and with no luck, no ashes...
You barely made it to the double digits.
Got 100+ kills in VoA and then mount. Almost exact (^^_)