Basically you have a light pet turned on, got to be on for the whole duration of passive tame with chitin (idk kibble yet), then you play red light green light with it. Red you stop green you try and run to it and feed it. It'll then hop around to find a new spot. Don't move while it does this as I think it drops taming progress hugely. Bit hard if it jumps out of render distance as servers are so new Dino's don't spawn in very far ahead

More Cosmo Taming & KO Tips