You have to pet it.......but THEY WILL ATTACK IF THEY SEE YOU!
The thing about these is that they don't attack anything unless an animal has really low HP and isn't surround by predators. Stick around a ton of Ankys or something like Ankys, and you should be fine. They are found in Scorched Earth, even though tons of people say they are not there. I found four in an Oasis.
I see what other people have said but in my opinion these things aren't much of a problem especially if you have something like an argentavis as you cna pick them up and either kill them or put them in a trap if you have a trap built but don't have an argentavis my tip for you is to get a fast dino or if you are fast hit one and sprint towards your trap if your lucky you can get the whole pack in there and kill the ones you don't want hopefully this helps but I wouldn't try tame one super early game :)