Parahuman is the very slight change between a man into the two legged beast you normally see on TV shows and bad movies. There is a generally a height increase of about an inch to three, muscle mass is increased, but the body retains most of it's humanoid look, though the ears grow a little more pointed and the teeth begin to extend into their k-nine qualities. Nails become thicker and more pointed as well.
( This picture was cut from a line of pictures from this site. )
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http://jiggsokeken.deviantart.com/art/Werewolf-The-Apocalypse-Garou-Forms-280620066