His/her e-mail is posted on the site along with this disclaimer:
MiniatureYorkshireTerrier.blogspot.com does not claim credit for any images featured on this site, unless otherwise noted. Usually we try to give credit when and where we can. All visual content, copy and images, is copyright to it’s respectful owners.
It's certainly not right that they stole your picture. Maybe you should e-mail the person:
Dsorles@gmail.com