Well, as mentioned, I don't particularly like traps, but these 'living' traps are even worse. They are too obviously specifically designed by the DM to screw the players, without regard for making any actual sense. I hate that kind of meta-gaming arms-race.
Cloakers and lurkers we love. We consider them a natural evolution of magical creatures.
Ears seekers and rot grubs, we tend to agree with [MENTION=46713]Jhaelen[/MENTION].