Spice and Wolf started as a novel. Later, it was adapted into a manga. So, it's both, but it originated as a novel. The novel provides the base story that the manga builds upon.
Yes, Spice and Wolf is quite popular for fanfiction. The anime has a rich world with interesting characters like Holo the wolf deity and Lawrence the merchant. Their unique relationship and the medieval - like setting provide a lot of material for fans to create their own stories.
There is a wolf anime story where a wolf is raised by humans. This wolf, named Akira, has a special bond with a young girl in the village. However, as Akira grows older, his wolf instincts start to surface more strongly. The villagers become afraid, but the girl tries to protect Akira. It's a story of friendship, fear, and the struggle between human and animal nature.
There's also 'Okami - San and Her Seven Companions'. It features a girl who has wolf - like characteristics. The story is full of humor, school - life situations, and a bit of mystery as the characters interact and deal with various challenges in their school and personal lives.
One common theme is the struggle between nature and civilization. Wolves often represent the wild, and they may face challenges when interacting with human - made environments or cultures. Another theme is loyalty, within the wolf pack or towards other characters they befriend. For example, wolves will fight to protect their pack mates.
Pokemon is actually both. The manga gives the foundation, and the anime expands on it with action and adventure. They complement each other and offer different ways to enjoy the Pokemon world.