I love respawning. ^^
I like when it does that with chests/boxes/etc. Depending on what kind of game you have, you can get monsters and crates to respawn.
Does WoW do that? I never stuck around in one area to find out. xP
But at least in WoW you can spawn your own animals if you're a druid.
Did you even play world of warcraft? Druids can't spawn animals.
Oh damn...that's right, they tame them. I'm such an idiot. xD