Furor of the bitten is bad. Enchantments are rarely effective unless they get returned to the hand. I would suggest replacing with rancor
if not for the fact that I want you to run the wolf run instead. Hell run them anyway just reduce to 2.
Clinging mists does not belong in an aggro deck. Try Overwhelming Stampede
instead. It is better then overrun
when you naturally have strong creatures.
Hunger of the howlpack while a great card needs more interaction with counters for you to really use. I would replace with the best equipment you can find.
Since you are playing red/green anyway might as well include a good source of repetable damage. Grove of the burnwillows and punishing fire is a good one. (but a bit pricey)
One of the biggest problems with werewolves is wanting to do many things in the same turn. you can get around this by putting things directly into play. aether vial
can handle that well. Helps if you have creatures congregating at the same converted mana cost. (1 and 3 works great with punishing fire and moonmist).
Prey upon is really a green answer to a problem with removal. If you are running red then you have no need of it. Since you are going to want the two lands you invested in to be in every game use some form of green land search to go find them. I suggest crop rotation.
4 Young Wolf
4 Reckless Waif
/ Merciless Predator
4 Kruin Outlaw
/ Terror of Kruin Pass
2 Huntmaster of the Fells
/ Ravager of the Fells
4 punishing fire
3 Overwhelming Stampede
3 crop rotation
1 aether Vial
1 garruk relentless
1 grafted exoskeleton
alternate win con, very good for destroying certain had to remove creatures.
1 sword of body and mind
a decent equipment that gives you wolves
4 gruul turf
a good dual, ultra cheap
2 cavern of souls
2 grove of the burnwillows
pricey but worth it
2 Kessig Wolf Run
pricey but worth it
sideboard (I like transformative sideboards, this one would replace your werewolves with a persist/undying theme, not that the finks are hella pricey now pyreheart wolf
would work fine instead)
4 kitchen finks
4 murderous redcap
4 power conduit
3 hunger of the howlpack
(persist creatures are an excellent reason to use it)