Yes as was said above, if your familiar is called Volatile then you have already morphed it. To undo the morph and choose the Clanfear morph instead of the Volatile you can respec your skill points at the respec shrine in Mournhold. However, the downside to this is that you have to to respec everything, not just the morphs, and it can be expensive depending on how many points you have already spent.
There are some awesome builds that are really strong and don't include pets, so before spending your hard earned gold think about what you want your build to be in the long run. If you like using pets and want to plan your end game build around them then it might be worth the cost to respec. Having said that I plan to respec later on for end game anyway to get points back in things that I won't use anymore (such as research trait points spent in crafting after researching is all done).
Take a trip to the respec shrine and click to see how expensive it will be then you can weigh up whether it is worth it at this point. I did not find the Clanfear much more help than the Volatile familiar to be honest, and almost never used pets when I got into higher levels on PTS. It's a personal choice and depends on your playstyle and what you enjoy.
» Edited on: 2014-04-11 06:14:27