People often ask what makes a dog a Biewer terrier vs. a Yorkshire terrier and there are only two obvious distinctions. Otherwise, the two breeds seem practically the same. The biggest difference is the coat color, which is what made the Biewers choose to breed the puppies in the first place. Yorkies have only two or three colors, which include some combination of tan, gold, black, or blue. On the other hand, Biewer terriers have three colors in either of two combinations: white, blue, and black, or white, gold, and tan, all falling on specific parts of the body, according to Pet Wave.

Aside from the fur color, Biewers do not have docked tails. While both breeds are born with full-length tails, Yorkshire terriers often have docked tails, which is part of the breed standard. But since Biewers are from Europe where tail docking is illegal, the breed standard developed for the Biewer puppies does not include docked tails.

The information provided above came from Cuteness.com. Please feel free to visit them.

Other resources include The American Kennel Club & The Biewer Terrier Club of America