The best way to find these for taming is to simply build a base, guaranteed they will spawn inside.

Run.

I had a allo called Alex he was lvl 13 and I loved Alex.i went to the mountains and saw two kentros.one kentro was lvl 1 and the other I dont remember.the lvl 1 kentro killed Alex.now I always kill kentros.im sorry Alex...you will have been a great tame...I swear to get your revenge for you...*updoot*

Friend with low settings: hey look a rex I can outrun it

He was never seen again

First time I tryed to trank one it was in a pack of three and they killed me four times than I got mad and killed all three..... third time they all died.... AGAIN and the same thing happened the forth time and the fith time I lost it in the ocean...... im still trying to get one....... :(......... so if you want to tame a allosaurus hv a plan...... like put it in a trap.... that is all i hv to say