Foo Dogs are a special breed of dog, believed to be a celestial spirit-animal who guards mostly over Buddhist temples. They are renowned for their ability to detect magical things, creatures, danger, and even dark intentions. The White Council use Foo dog statues as enchanted equivalent of a metal detector. They can magically attack people who attempt to violate or push past them. They can give incredibly loud barks, fused with magic, that will wake people from sleep and warn them of impending danger.
They have human level intellect, increased survivability and healing abilities.
Ancient Mai is theWhite Council's resident expert on Foo dogs, she enchants the guardian statues used at security checkpoints, and recognizes Mouse as a true Foo dog, which was a suprise to Harry, as Mouse was formerly considered a Temple Dog - a term referring to dogs who simply have some Foo ancestory in their bloodlines.