I know that many people have said that getting bite for a Windserpent is useless, but clearly there are certain situations in which you need bite to do decent damage with a Windserpent. The primary case I am talking about is fighting certain elementals - both earth and wind elementals are immune to nature damage, therefore making LB useless against them. If you want to use your pet for pvp only, you don't need bite, but if you plan on farming for motes (which I do very often), you will want the extra dps from bite. I use my Windserpent as an all-around dps pet (for pvp, pve, and farming), therefore I have taught him all possible abilities. Of course, I only turn bite on when fighting elementals obviously. I hope this helps people when deciding what to teach to their pet.