Ok so mine took about 10 Moji Barries, so be ready with a lot because it can very from a few to like 13. But in the end it’s worth it. And it’s little waddle run is so cute. Patting this fella helps your other dinos level up pretty fast, so a team of them would be extremely helpful if all your dinos are pretty low levels. This guy is just soo cute. Also I named my after a Lestrange Brother, I don’t know why but the name of this fella’s breed just reminds me of Lastrange.
It is very easy to tame. Just get a couple of mejoberries, stay close to him and give him one whenever he's hungry, through passive taming. Just be careful not to let any predators approach, wait less than 10 minutes and you will have your pet Lysto. If it is female it is useful for eggs, otherwise it only acts as a companion (in addition to making poo useful as a fertilizer).
Ok so if you are on mobile, I figured out how to tame them with no violence. I put amarberries in my hotbar guessing that was like have them "out". Started following g this little guy around, and behold, his tame meter started rising!