It is the only Pokemon in the game to evolve with a Solid Stone.
It is one of the only 3 Pokemon in the game to evolve with an Ice Stone, the other 2 are Guppish and Subearo. Out all these 3, Subearo is the only one that evolves with an Ice Stone that isn't apart of a branched evolution line.
It and Guppish are the Eevee of this game. Baawool and Guppish are also of the only Pokemon to be part of a Branched evolution line, with Merkid being the only other Pokemon in the game to do so.
Baawool is based on a lamb.
The name comes from Baa and Wool. With Baa meaning the sound that sheep make.