I found a level 1(by chance), and it took me 14 seconds to tame. I found thirteen more over the month, and by February(found my first one at January), I had an army. I took down a whole Allosuarus in seconds with the army, but we had a PVP war, and..........eleven fell to my enemy's Trexes and Baryonyx. Only one remains now, and I keep him in my ark Basement. His names JasonBourne
It's not a very good tame when you first get ark, it needs rare meats and you have to watch its torpor. But, if you can get your hands on a lot of narcs and prime fish meat, you can tame a whole lot of these.