If you try taming these guys, tame a Quetzal first and equip it with a platform saddle. Then, put 2 storage boxes on it and a cannon. Make sure you make LOTS of cannon balls. Then, shoot the titan in the head.
In your settings (not on mobile!) there’s a setting that allows you to KEEP your Titanosaur by letting it eat! Pretty cool if you ask me, it’s especially convenient if you’re on single player and you just want an EPIC mobile base!
if your in mobile don't try to tame a titan near the ocean because the ai of the titan in ark mobile is dumb and can drown themselves so when you are taming a titan if it's near the ocean don't tame it it might have a chance to drown itself