I noticed some Alpha's don't only eat their respective Kibble for Taming.
I succesfully tamed Alpha Gigantopithecus' with Honey.
I tried to tame my first Alpha Mantis with "Deathworm Horn".
I used the Potent Opiate to drain its food, but even after 40 Minutes the Alpha Mantis would not eat a Worm Horn and become tamed. (The Alpha Gig's took ~30 Minutes without Opiate)
The Taming Food Info comes from the Awesome Spyglass and it usually shows what works.
What did I do wrong? Also if someone knows I could need some Info about other Alpha Creatures that don't require Kibble to tame. Because I could not find a Hesperornis or Easter Bunny yet and the other Kibble Mods I tried were not to my liking.