Carnos are a good start for tames that deal good damage. If your a high enough level and see a whole pack of these, not a big deal, mow it down but if you even see a glimpse of a alpha carno.. please run. I brought my lvl 14 Rex and two carnos to carno island to get obsidian and we all got absolutely destroyed..
So back when i was a new ark player i tamed 8 raptors just for defense, later on i spotted an alpha carno walking down the beach towards my base, and not wanting my newly tamed sarco, and trike to die, I did something any normal person with 8 raptors would do. Me and the pack and charged into battle, lets just say i lost all but one, Silver. Shes still alive today and happy, And we did kill the alpha carno.