I used these things for the overseer i spent hours breeding only to find out they couldn’t even fit in the cave but I didn’t want all that time to go to waste so I used admin commands and eventually i had 8/10 deinotheriums and only 3 came into the boss while the others just stayed behind it was really buggy but luckily I pulled through and ascended

Would not recommend using for the boss though theris or rexes would be better maybe even chalicos