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
The best way to tame an allo is to find the level that you would like and kill off the rest of it's group but if u want all three just get to some high ground and then just start shooting them with tranqs
A simple way to knock it out is to build a 3Ã—3 room with a gate lure them in with a pachyrhinosarus inside then calm them with the pink stuff and just tranq them make sure to keep them passive to have an easy knock out ;)
If you encounter a pack and only want to tame one of them, you can aggro them onto other nearby wild dinosaurs, and eventually break up the pack. This makes it easier to kill off unwanted Allosaurus and eventually single out the prospected tame.
Allos' are like land sharks. They can see you from a mile away, travel in packs, and are extremely fast. Chances are if you can see it, it's too late for you if you're on foot.
Best chance for survival is find another Dino and run beside it to try and get agro off yourself
Most times the two omega allos will go wherever the alpha is. Key is every few minutes the omega branch off slightly. Distract the omega, kill it. Once the alpha loses alpha status, ko itand kill the other omega