I did ZG every reset to get the rep up to exalted and can't confirm a oom-heal from her.
In fact, with this low dps-start she will never heal herself. In the beginning she doesn't need to and after a certain point she will be oom =)

I have always been a great fan of Warpstalkers, their special ability gives them extreme avoidance, only reason i didnt use it so far was their lack of threat. Next patch with Thunderstomp it might be an option ^_^

Couple of things. First on ZG bosses that heal. Their heals cost 100 mana so it is technically feasible for them to heal at "0%" mana. The obvious counter is to get them below 100 mana and keep them there.

On TBC mount farming:
1. Heroic Sethekk Halls is impossible to solo simply because it requires a druid to summon the Raven boss.

2. Heroic MGT, first boss is a push over, second boss is difficult but doable, third boss (the pvp group) is very hard-impossible (I don't know of any hunter that has soloed this. My personal best is 2 "bosses" and a pet) mostly because of the lack of agro lists. On the flip side it is insanely easy to duo this group. I would hazard a guess that Kael can be soloed and would be mildly difficult. Post 3.1 this might be more doable as wrym sting will actually be a useful CC with its new 30 second sleep.

3. Karazhan. Getting to the boss is easy enough. Currently is on the hard/impossible side as the combination of horse and rider nukes the pet down faster then 2pT5 and mend pet can handle. Should be much more doable with the new Glyph of Mending post 3.1

Yep had same experiences in MgT and Kara; first boss MgT easy, 2nd boss MgT a challenge but doable, 3rd one is not really doable solo (yet...). Attumen might be doable next patch with the buffs.

Update on ZG: did first clear today, including bat boss which is trivial once drained, and Jindo too (had to dismiss pet, i need to learn to think out of the box i guess :P )

While Living Ice Crystal is very nice it is also extremly hard to get. Also when I was trying Garr today I almost made it past the adds. The solution is high dmg with 2T5 for maximum heal. Mana is more of a problem than anything else because at some point you won't have enough for volley and then your pet dies. I have to bring some mana pots along next time, I noticed this while doing core hound packs. Core hound packs are rather easy if you have enough damage since your T5 will heal enough if you do not use any tanking equip. The great thing about core hound packs is you can use aspect of the viper, with Garr you can't really switch you have to use Aspect of the Dragonhawk for maximum heal.

Isnt aggro the main problem though? Using 2xt5 + Mend is enough healing yeah, but if its YOU that gets all the damage, it wont help you much. Are you using a gorilla here? Cause i use a bear atm, next patch ill get thunderstomp.
Edit: you think it might be worth speccing deeper into MM for interupt immunity on Volley? So spec would be something like 35/33/3 (still want Hawk Eye for Geddon ofc)

What's the consensus on solo tanking pets in 3.1? With the changes to thuderstomp, will BM Turtles be the tank pet of choice?

Well, Thunderstomp is the big AoE aggrothing for our pets (in fact is even a very good single target aggro ability). So basically any Tenacity pet can now take over where the Gorilla reigned supreme before. However, there isn't likely to one 'best' pet for old content. For instance if the boss has a lot of spawned adds on a short cooldown, then a pet that can grab aggro will be good, like a Bear. If the boss has a relatively large amount of adds with more than enough HP, then a pet that can maintain AoE aggro is good, like a Crocolisk. If the boss has a nasty enrage that you can't avoid, then reduction to damage will be superior, like a Turtle. And if the boss selfheals for a lot then a Gorialla with Pummel will be good.

Now, most likely each and everyone of those can manage in the others' speciality areas, but the specialists should have an easier time.

I don't remember which thread it was exactly, but I saw someone here mention that Doom Lord Kazzak was possible to solo, as well as Doomwalker being another potential soloable boss. I myself have never fought Kazzak, and when I fought Doomwalker, it was at 80 with a nearly full group, and I wasn't really paying attention, so I don't know his details.

Being 70 raid bosses, I'd imagine it would require a healer at the very least.

Maybe soloable for well geared Blood DK tanks, I doubt Hunters can solo either. They have HP like Ony more or less, more armor etc. So killingtime will be similar. However their raiddamage is much more profound, to the point that I doubt a potion and some bandages and/or specialist trinkets can manage it.

Doomwalker I don't think you can solo, mostly because of his armor debuff thingie, in a 30-40mins fight, you're bound to get hit consecutively by it and have your armor nerfed into the ground, at which point self healing isn't really enough. Duoed him with a priest healing, and it wasn't particularly hard, but it wasn't totally easy either and we did wipe once(aggro dump and he one rounded the priest who was too close), but I required some healing, more than a blood spec can sustain. For the same reasons, I highly doubt a hunter could solo, especially since hunter's pets have less avoidance, less armor and way less health than a DK, for about equal healing power.

Kazzak, definitely not happening. For the DK, the obvious reasons is you can't dispel the curse that heals him for 50k, and for hunters I'm pretty sure you'd simply die to the shadowbolts or the mana draining stuff, we were getting our ass owned with the same priest we duoed doomwalker with.

Those 2 as far as I know require at least 2 people, in kazzak's case, I'd say 3 is a safer bet.