How to distinguish Teddy pure or impure

Teddy’s features are black, his head is small, his ears are long and wide; he belongs to the teddy bear variety, so he is small and light; his hair is dark, usually red or chocolate, and the hair of a purebred teddy is similar to a wool roll; you can also determine whether he is purebred by observing the length and width of his mouth. The purebred Teddy’s head is small and round, slightly prominent, eyes and nose are black, eyes and nose are smaller than other dogs, the mouth is not too long, the outline of the ears is longer and wider, the hair above is thicker, the earlobes are attached to the head.