a good friend of mine done some research on the good ol internet and found that a wolf in japan is a link between our world and the spirit world. the wolf appears at the graves of zak and aries as a way of putting this across and at the end where cloud is supposidly dead and the wolf walks up next to him its a way of saying its not his time yet.or as one of my mates said after watching the film it could be aries trying to communicate with cloud. thats all we got on it.