If you find a pack of raptors wait till one of them wanders away or the others die,but make sure it isnt the alpha raotor because you cant tame those.(still be carful because i saw a lone one but it wasn't alone)Then you bola the raptor knock it out with you fists club,of tranq arrows.(traq arrows recomended because it can still attack you)Then feed it some meat,get it a saddle if your high enuogh level and you'll have a great buddy.
Here is a easy way to tame this creature1. Get a few bolas (just in case you miss or a there’s a pack)2. Get meat3. Find and bola raptor 4. Knock out with club/fists 5. Put meat in inventory Boom! now you have a raptor!
They can escape a trap made of doors on Ascended. I didn’t see how (I’m guessing they fit through the door space now) but I dropped one in a taming box made of doors 3 high and was parking my Argy when I heard all this commotion and he was going nuts on my tames I had set to Passive.