these guys are fun to kill but i saw a group of 3 of them one coned blue white and yellow, on track as a 4th level ranger so there a bit more varyed than 4th
Low level characters who spot a watcher near the path should keep an eye open, as the gnolls usually are in groups of 2-3, with a scout or pups often nearby. They aren't close enough together for AoE spells like Invoke Lightning most of the time. A good place for Druids to test their Harmony spell and then pull them one at a time.
Kill them for teeth, give them to the captin one at a time in quenos warior guyild, take the moonstones you get from him and give it to jacob behind the bar in the pub, and he will give you blackburrow stout, sell that for cash. Every time you give one of theese things you gain some EXP, use it for a level 3-5 quest.