The Maltipom delivers the longest celebrity guest list of any four-pound companion dog in American pet culture: the Maltese, with over two millennia of documentation as the companion of Greek philosophers, Roman aristocrats, and European royalty, and the Pomeranian, whose miniaturization was championed by Queen Victoria and whose fox-like face and dense spitz coat turned it into the most photographed dog on American social media. Together in a toy cross that weighs barely more than a bag of flour, the Maltipom produces a personality far exceeding any reasonable expectation from its size. The breed is enormously popular in US cities from New York's Upper West Side to Beverly Hills — practical for small spaces, low in allergens, and endlessly theatrical.