I will quote from a proper Scholar for the next answer. Since it appears i made some small mistakes in my first. A wild animal animal needs to die from the wound inflicted. here is what the scholars say. The link has a bit more info too
http://www.askimam.org/public/question_detail/187671 ) If a person hunts an animal using a bow and arrow or a rifle, there are four essential things for the animal to be considered Halaal.
a) To recite Bismillah before or at the time of releasing the arrow or bullet.
b) The death of the animal was due to the wound caused to the animal and not due to the impact or drowning.
c) To pursue the animal once it is shot.
d) To slaughter the animal if there are traces of life in it.
If a person recites Bismillah and shoots the animal, immediately thereafter, he pursues the animal. If he retrieves it after it has already died, there is no need to slaughter it. The meat will be Halaal to consume and to give to others.
However, if he does not pursue the animal immediately or does not slaughter the animal after finding it alive, the meat will be Haraam and impermissible to give to others.
(Hidayah, vol.4, pg.510, Shirka)[1]
(Hidayah, vol.4, pg.505, Shirka)[2]
(Ad Durrul Mukhtaar, vol.6, pg.468, HM Saaeed)[3]
Hence, it is absolutely necessary to search for the animal after it is shot and to slaughter it. Not slaughtering the animal after finding it alive will render the animal Harām.
The bleeding caused by the bullet or any other sharp object will only suffice in the case when the animal was pursued and found lifeless.
2) It will be permissible to hunt Halāl birds (which cannot be caught) using a shotgun as long as the above four conditions are met.
