As written before. Most will probably loose interest with time.
I do understand if some find it annoying. If you do spend quite some time in the game, the howling/roar gets really derrp xd. Sure you can turn off the sound in the game, but then you wouldn't hear anything else at all.
But it is true, it is somewhat funny that some people want this howl/roar, get it, and then don't want it.
Lets just hope it will tone down though, cause the amount right now when playing in a public map is out of question way too much.
I personally find the overuse of howl extremely annoying right now, and I'm not lying when I say that there's probably max 2 seconds breaks at most in bonfire before hearing 1 or more howls again.
I did something about it though that would please me, and I'm sure anyone could do this.
Find the "howl1" sound inside the sounds folder.
Open it up with any audio editing/recording software
Change the sound level to nothing at all, and save the sound clip with the same name.
Next time when you run FH, it will play a sound with no sound xD.
Works like a charm.
I'm not sure if you even need the mp3 at all. But I did this instead of removing it since I thought it might give you some error about a missing file or crash everytime someone used the action.
Overall, give it some time and let people get bored of it. If that doesn't happen, you can always do what's mentioned above.