That/s weird... I don't think it would be fur texture related but mask related. I'd recommend downloading the default masks from here:
This download includes all the default FH character body masks and stoof. Basically what your character's appearance looked like when you first played FeralHeart.
>>Click - Default FeralHeart Masks<< (http://www.mediafire.com/download/8phaacx8t4c852c/Default_Masks.zip)
You'll want to take everything from in there and put it into the textures folder and click replace when it asks. If that doesn't work, I'm honestly not sure what you could do. I'd recommend reinstalling if it really starts to bug you.
You're very welcome! :) Thank you for the floof! -nuzzles back-