My girl got a big 120 gram hairless last night, took it down no problem... Then again, she eats anything soooo I'm not sure if that's helpful lol. But you won't have any hairless in your f1 gen unless one of the rex girls happens to carry the hairless gene, or if your hairless is in fact a double rex (in which case you won't get any hairless, just rexes and double rex). Either way, my snakes don't care either way on the status of their hair