I like using one of my gigas to quickly kill a titanosaur, especially when some wyvern has been fighting it for 34 minutes. Feels good, and the exp is great. Not to mention nearby bases are actually safe, rather than having a titan thrashing about with no control for half an hour because a wyvern owner wants to over-step.
Easily killable with a wyvern. Lightning and poison easiest down to longer range in attack. Just hover above and light it up :) killed my first today and it didn't touch me once. Just remember to watch stamina ;)
Ok guys when i see this i decided to hit him with my pteranadon because everytime i hit him he runs away like a coward but this time something like this happened... Your pteranadon level 27 was killed by Titanosaur level 1