These are three ways to tame a deinonychus. Note: These do work, I’ve tried them.

1: Get a bunch of movement speed, grab the egg, and run outta there. (For modded/unofficial)

2: Wait for them to attack a creature, then grab the egg and run for your life. (Any type of map)

3: Bola your tribemate/Dino as a distraction, then grab the egg. (Basically a quicker way of option 2, also any map)