All posh dogs love shopping along Newbury Street – or at least their owners do. But when the pooches get dirty, it’s time to book an appointment at Pawsh Dog Boutique & Salon. Located in the Back Bay, just steps from Newbury Street’s glitz, the trained professionals on staff carefully trim each dog’s nails, clean their ears and even brush their teeth following the full-service grooming. This by-appointment-only salon also sells carry-on bags for small pups, haute collars, stylish jackets, comfortable dog beds, conditioning shampoo and a selection of natural foods, which is helpful for owners with finicky or allergic pets. After all that, your dog will still love the doggie treats on the counter most of all.