What can and can't be "camped"

[Ravenfeather]

My apologies ahead of time is this sounds whiney, but I'd like a clarification, to make sure that I'm neither being a jerk nor letting myself be walked on by jerks. My understanding (from regular EQ days) was that if something wanders around except in a very small area, especially outdoors, you can't call it "camped", it's first-hit, first-served. That is, unless it has a camp, you can't camp it. (I'm specifically wondering about the crag spiders in EK, but I'd like to know what the policy is, in general, for future reference).