I assume you are playing on version 2.0.1 right?
For the animals you should try hunting for them using the sound system when you have the weapons to fight them off but I'll definitely add in even more spawners in the next version because its fairly hit or miss. Its both a performance issue along with not making the game too hard so I'm still trying to find that perfect balance.
The first part is a bug that I encounter during testing about half of the time and I'm still looking for a fix for that. I have no idea why its happening because the code looks alright to me.
Armor is pretty limited its just the cardboard equipment you craft using cardboard. The clothes you find isn't armor its just for cosmetics. But to fight a wolf I didn't consider a player having armor so its not a big deal. A gun should be enough, especially the shotgun.
There isn't any music I'll probably just remove that setting its just there as a placeholder in case I add some but its very low on my priority list as of right now.
Right now I just want to build up the features list before taking it out of early access and fixing all of the bugs. Its just me working on it when I have free time as a passion project so I miss a lot of bugs while testing or I just don't think of testing a certain feature.