6-year-old Sammy, a Yorkie poo, watches as his owner Heather Marshall practices yoga at Dormont Park on Saturday. Sterling Yoga & Wellness Center offers “Sterling Doga!” for owners to workout with their four paws partner. (Photo by Lake Fong/Post-Gazette) #Pittsburgh #PGH #412 #sterlingyoga #yorkie #yorkiepoo #dogsofinstagram #yoga #PGPhotos