Continuity mistake: During the fight caused by Mulan when she first arrives to the camp, Ling gets several of his teeth knocked out. But the next day, his teeth are all back in his mouth.
Continuity mistake: In the scene after Shang became a captain, Shang says "Soldiers" there is an underneath shot of him, and there is no gray stripe on his pants but then the stripe is back in the next shot.
Answer: They are members of the Chinese zodiac. Mushu (the dragon) is also a member. It is assumed that the other eight animals are present.