It may not be news to anyone but I thought I'd share this info.
Werewolf skills level by kill count; so even killing lvl 1 animals counts.
That being said, for those in the Dominion, Monkey's rest is where you want to be.
1 shot those suckers with a bow (or something else if you want the minimal experience from that) to build your ultimate, then run through as a wolf killing monkeys again. They almost respawn fast enough that they're back by the time you've made the circuit.
Hope this helps someone impatient like me. Lol.