Native American Indian omens and superstitions question here…..?

Last night, during a storm, I was inside my garage with the door open looking out at the rain come down, when a huge, pure white wolf with yellow eyes came at a fast run from the middle of the deserted street and ran straight into the garage. He was sopping wet, cold and hungry. I have cared for our friend's wolf and so know how to interact with one. Slow, sure movements, no running and no fear. I toweled him off gently, laid down a pad of blankets for him to rest and hand fed him roast beef, allowing him to lick and nibble my finger tips. He stood up on me and met my height – 5'6" and tried to dance with me, it seemed, though I know it's not possible. When I forced him down, he reached behind my leg and put my calf in his mouth and tried to pull me out of the garage. I could feel his sharp teeth prick my skin but he didn't tear the flesh. I told him to rest and was trying to be spiritual with him, because I was trying not to become afraid. He was about a year old, as best I could judge. Then he lay down and slept 30 minutes, got up tried to play with me but he was too big and powerful, even for a pup and I quietly moved away and went in the house. Each time I would come outside, he would following me around. He seemed very calm and comfortable around me. It was 4:00 am when he finally left my yard. Late this morning I awoke and he was gone. It was an amazing experience. My sister and I have discussed this occurance and she feels the wolf is a ghost dog, who comes to guide someone soon to depart life. I think it could be a good omen.

I am wondering if there is some Native American Indian lore about such an experience or someone who has any knowledge of it that will say weither or not this is a good omen or a prelude to death? I wouldn't mind getting advise from experienced wolf handlers about what to do if he should come back and if you thought I was foolish to have interacted with an animal unknown to me.

I feel it is just an amazing and unexpected experience but it felt spiritual. I didn't get a photo because I wasn't sure how the wolf would react and I didn't want to get hurt or offend it, since I know they are very sensitive animals. =)