My ball sometimes comes to the front of his bin once I've turned off the light, and once or twice I've opened it for him to see if he'd come out on his own and climb on my arm - he watches me open the top calmly but retreats, even if I just hold my hand outside for him to smell. Normally for handling sessions I lift his hide and take him out, but that's in the afternoon and he seems more amped up at night and more likely to think about striking. I was wondering if over time he might come out on his own or if this too big of an ask for a BP -I know some boas will happily climb out onto an offered arm, like a trained parrot, but maybe it's beyond what can be expected of a BP?