In mobile they disapear when you go too far from the base. Appear randomly more-less near, but sometimes you can just recall them. Very frustrating. Always keep it in neutral and with some food. Give it a collar. Locator disapears too.
This dino is by far my favorite. If you can manage to find 3 120 allos you will be close to unstoppable. When you have 3 allos( doesn't matter what genders) the highest level will be considered the "alpha", this means the alpha can do bleed affects which causes damage over time as well as slows you down temporarily. When getting a pack of allos or a allo the only stats that ever need to be pumped is stamina, melee damage, and movement speed. Hope this helps! 😄