I wanted to tame one. But then I got sad when it needed element. I did some missions and got a couple element and went back to see if I could tame one with what I had. I fed it the element. Cue the fear, it transformed on me and I died. I went back to my bag and got grapples. Then I died, but I placed a bag knowing it would eat me again. It only took 2 which is nice. Me and Dorothy are doing fine now. Moral of the story is. Don't judge things by how cute they are. They will still eat you on drugs.
First of all, keep him out of the light, he hates bright light, especially sunlight, it'll kill him. Second, don't give him any water, not even to drink. But the most important rule, the rule you can never forget, no matter how much he cries, no matter how much he begs, never feed him after midnight.