Do cougars in Iceclad Ocean, but do them outside of the Tower of Frozen Shadow. If you go to about 2700, 1700 there's like a small snowy beach, and the area right above it is a safe spot. There's tons of cougars (an no other mobs) in the forest nearby, and you can pull them to the safe spot and then fear kite them from there.
If you try to kill them by the docks you have the advantage of being right near your spawn point ... but you're way more likely to die, because there's nowhere to run (the island doesn't have a land bridge and isn't big enough to lose agro on), and since Rangers can't gate that means even a single add can easily mean death. I died there several times before I moved to the ToFS spot, which does have a
land iceberg bridge to the next island, and you can zone out from that island. Also I found it much easier to avoid adds at the second spot, and if I did get them the island was big enough that I could usually root the add and then run far enough away to lose it (I've only had to run to zone once the entire time I've been there).
I just brought my Ranger at level 30 a week or two ago. I got through that hell level and now he's 34 ... and still killing cougars
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