Fox Spirit

This is NOT 'ninetails' from Pokemon. It's a golden fox-spirit from a legend I once read. These guys start out as gray foxes that like to torment humans. They look like regular foxes, but you can tell them apart buy the tounges of flame that momentarily materialize above their heads. After, I believe, 100 years on Earth their coat turns gold-ish and they sprout nine tails. They then rule over the agricultural issues of the Earth.