So, a lot of tips say to separate and kill off the others in the pack to get the one you want...Capture all 3, rolling in a pack with mate boost and the Alpha attack, these things are pure killers, I used a taming raft, used and Argy to lure them up the ramp. Took a bit to get all 3 in, but then just sailed back to base, knocked them out and tamed the entire pack, One on its own is okay, Mated boosted pack with Alpha to ride, you will not regret the extra resources used
When single taming be at least level 52. Tame a Tapijara. Find a group of allosaurus. Next break one off from the pack by attacking one and leading it away. The others might follow that’s okay. Lead them to a cliff and fly over the cliff. Switch seats and begin to tranq the one you want. When you knock it out lead the others away. Go back to the unconscious Dino and begin to place meat in. Have at least ten Narco per level. The other allosaurus will almost always come back. I suggest taming two at a time. Knock out a second one. Then kill the rest as they might attack your brand new allos....... keep in mind that prime meat speeds it up by 70 percent than raw meat so go and kill some Dino’s. Good luck and happy taming! Also they might kill your new tapijara so make sure you have at least 50 percent health when going close. They killed mine.... but I had three more. Always have a backup flyers.
if u are going for an allosaures tame the easiest thing you can do is lead one into a taming pen and then kill the others outside that way they do not have the alpha pack boost affect and you can easily and safely knock it out