Ohhhh. Hmm, so it sounds like it's hormonally developed, to some degree. Very interesting.
Okay, since this is essentially a Q&A, how do I bond with my rabbit better?
He's really opened up and gotten very vibrant since we first got him, and his sound-tolerance is outstanding, but he still gets a little nervous if I approach him intending to pet him (it kind of depends on the day though).
I've been trying to do some neutrality training, just standing super close to him but not interacting.