I've gotten second shots, actually killed one with a second shot once, first deer I ever shot with my bow just stood there after jumping, then walked off blood pouring out.

Never seen a deer duck an arrow
Never seen a fight (heard one once and convinced me I don't make enough noise rattling)
Never seen one scrape or rub
Never seen a buck in velvet except during summer
Never gotten a shot off at a monster, had two chances, one a squek from my boot saved him the other his 6th sense did the job, to this day I don't know how he knew I was there.