If you use the cheat command ---> gmbuff

On it it will get levels and mine got over 100 k health. To be exact 106,563 thousand and if you use cheats to spawn a level 1000 and then do gmbuff on it you can get up to 350,000 thousand health and you can put some points into damage if you want. If you did not know on Xbox one the cheat button is

---> click menu and then press LT RT L R Y X all at the same time to get cheats. ---AMM

Criminal these can’t breed by default on Survival Evolved, maybe they will finally get fixed with Aquatica but big doubt.