The story that directed me to this list (how's that for Irony).
It's a HP/AB crossover starting several years before Harry goes to Hogwarts Harry got bitten by a werepanther going through a park and since there weren't enough werecats in Britain to form a pard is left on his own. The story seemed to be heading towards HP/HG pairing the last I recall reading had Harry going on vacation to the U.S with the Grangers meeting the pack Richard was with while studying hill trolls.

Anyone recognize the story?