I hate these things more than I hate taxes. Get movement speed to a solid 134%. I've found that you can out run them with that. If you're in red wood run to a dire bear for safety even if it's wild just don't go too close. I've never seen a carno kill a bear. Collect the carno's prime after this and enjoy ;).
At First it kicked me off my Raptor so I thought that’s what it was but I got a good look at it and realized very quickly that I wasn’t lol but what to do when you find one of these guys is to run to the nearest water swim out it will loose Interest or use a bear trap and kill it
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.
Don’t sleep on the carno they will tear everything you ever loved with there bleed effect and they will even hurt rexes if the get close enough. The best thing to do is put a bullet in it run or swim away early game