^^ FWIW, I soloed from 29 or 30 to 35 in Iceclad on my Ranger, then did a combination of wolves there or random stuff in Overthere all the way to 39 / 40. The same rules apply for Druids, technically, although you'll be charm kiting instead of fear kiting (although you can always group with a Rogue and fear kite).
For Iceclad, the cougars are *amazing* xp until 32ish, then still in the "good" or "very good" category to 34/35. Safest spot is by ToFS. There's a long stretch on one side of the island (not the side with the drop) that's free of spawns. In 5 levels, using semi-careful pulls, I think I only ever got 1 add.
For wolves, I found over by the teleport rings to be reasonably safe if you pull to a shore.
At 35, another option is griffins/griffons in the Karanas, if you can find enough to charm - unless you want to root rot, which is an option too I suppose. Or quadding if you can find 4 up at once
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