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Biewer Yorkshire Terrier Mini Biewers should be socialized and stimulated mentally every day starting at a young age. If left unattended for a long period of time they could develop separation anxiety. This breed was created in Germany when Yorkshire Terrier breeders discovered a genetic recessive gene that was present in one of their puppies. It has now evolved into its own distinct breed. Health Tests for Health The Biewer Yorkshire Terrier is a rare breed that was created in 1984 in Germa