If you have to ask that question, you may want to do a liitle homework and learn shot placements.
Not to chastise you but I couldn't agree more. Befor you shoot at another deer please check out this link
http://home.mn.rr.com/deerfever/Anatomy.html
Shoot for the lungs.(pink area, red is the heartwhich would also be a good hit) Preferably about 1/3 of the way up the deer.