Orso and Bosco are Boston terriers, a breed of dogs that generally weigh no more than 25 pounds. But Orso and Bosco, whose owner is Alessandro Michele, the bearded, oracular savant of a creative director at Gucci, may as well be juggernauts.

Their likenesses are stitched into Gucci garments — along with a menagerie of bees, ghosts and gnomic sentiments about blindness and love — and Gucci garments, according to a report issued this week by the RealReal, the online luxury consignment giant, is selling, selling, selling.

The RealReal is based in San Francisco, with bricks-and-mortar shops in New York and Los Angeles. It has authenticators and experts who accept consignments of luxury items (fashion, accessories, jewelry, home goods and art) and then offer them on its well-stocked website and in its stores. The company authenticates consignments, sets prices and handles photography and shipping; consignors receive a percentage of the sale.

The RealReal has moved millions of products, it says, so it has sizable data on what customers are searching and shopping for. Its top brands are not what you would call attainable for large swaths of the shopping population (even at secondhand discounts), but in the hush-hush world of luxury goods, tracking changes in search and spending habits is as reliable an indicator as any of the quicksilver fluctuations of heat and buzz.