Only tame high levels, try for level 130+ and breed them. Get the best stats into a baby’s, male and female, keep that as your breeding pair. Then either go for mutations OR just get your baby and imprint. Push weight until it can carry your normal standing weight (you with armour and gear) then push stamina. I got an ascended saddle with like 170 armour for mine so I don’t push health but that’s me.

-Gog Wick