Well there are many realistic mods but here I have one listed for you.
Tearless has wonderful realistic textures you may like for both feline and canine. http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=24037.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=24037.0)
Just downlaod it and save it on your desktop or something then open it and place the files in FeralHeart>Media>Textures
You could also try Delays realistic texture mod.
http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=29225.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=29225.0)
Just do the same thing and put the files in FeralHeart>Media>Textures.